answer key nat reviewer

7/25/2019 Answer Key Nat Reviewer

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SCIENCE TEST 5

1.Which of the following describes the Circulatory

System?

a. It delivers food, oxygen, and needed

materials to the different cells of the body.

b. It picks up wastes from the cells of the body.

c. The major organs of the system are the

heart, blood, and blood vessels.

d. All of the above.

1.

2. The blood cells that carries Oxygen to the cells are

known as:

a.Plasma c. White Blood Cellsb. Platelets d. Red Blood Cells

2.

3.The protein containing iron that enables the blood

look red is the ____________.

a. food color c. homeostatis

b. hemoglobin d. platelets

3.

4.What will complete the diagram?

a.lungs c. heart

b. brain d. Kidney

4.

5.Which of the following characterizes

Arteriosclerosis?

a. It often starts with a sore throat.

b. It is caused by cholesterol deposits in the

arterial walls.

c.A person with Arteriosclerosis has irregular

heartbeats.

d.There is a lack of red blood cells.

5.

6. This is a small part of the brain which controls the

functioning of the heart and stomach,

a.spinal cord b. cerebrum

c. cerebellum d. medulla oblongata

6.

7.When you see a snake on your way, which neuron

receives the information?

a.sensory neuron b. motor neuron

c. inter neuron d. spinal cord

7.

Read and analyze each item carefully. Blacken or Shade the letter that corresponds with the letter of your

answer.

8. What is the correct path of messages received by the

body from the environment?

1- brain 3- spinal cord

2- nerves 4- sense organ

a. 1, 2, 3, 4 C. 3, 4, 1, 2

b. 2, 4, 1, 3 D. 4, 2, 3, 1

8.

9.This is a disease of the nervous system that is

characterized by the inammation of the coverings

of the brain and spinal cord. It is an infection of the ner-

vous system that is usually caused by bacteria

or viruses. What is this disease?

a. Stroke b. Meningitis

c. Alzheimers disease d. Encephalitis

9.

10.It is the rst time of Wilhelm to ride in an airplane.

He is feeling very nervous. What kind of fatigue is he

feeling?

a. Physical fatigue b. Emotional fatigue

c. Mental fatigue d. Spiritual fatigue

10.

11. Complete the diagram:

a. Organism c. Human body

b.Creature d. Person

11.

12. The following are Abiotic Components, EXCEPT:

a. Air b. Water

c. Tree d. Soil

12.

13. This is a close relationship between two organisms inwhich at least one organism benets. It is a Greek term

which means living together

a. Symbiosis b. Predation

c. Competition d. Decomposition

13.


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14. A group of farmers killed the snakes on their farm-

lands. Because snakes are the natural predator of mice,

what could happen to the population of mice? The popu-

lations of mice will _______________.

a. increase b. decrease

c. stay the same d. disappear

14.

15. Why are plants considered as the Producers?

a. Because they have their own energy.

b. Because there are many plants.

c. Because they have no predators.

d. Because they can produce their own food.

15.

16. What is the main source of energy in Earth?

a. Plants b. Wind

c. Other organisms d. Sun

16.

17. What can you do to prevent eutrophication?

a. Do not burn leaves and garbage

b. Do not take a bath and do your laundry inrivers

c. Plant more trees

d. Do not overspray fertilizers and insecticides

17.

18. What is the main cause of acid rain?

a. Water pollution c. Soil pollution

b. Air pollution d. Warm temperature

18.

19. This is the layer of gas in the atmosphere

that protects life from harmful ultraviolet rays

from the sun.

a. Stratosphere c. CFC

b. Ozone layer d. Atmosphere

19.

20. This is the microscopic organisms that causes

red tide.

a. Dinoagellates

b. Choloroourocarbons

c. Protozoans

d. Flagellatos

20.

SCIENCE TEST 5

21. Bath soaps and liquid detergents are examples of:

a. Preservatives c. germicides

b. additive d. pesticide

21.

22.What happens when there is too much carbon dioxidein the air?

a. People can breathe clean air.

b. Plants can produce less food.

c. The ozone layer will become thinner.

d. Heat will be trapped and the air will become

warmer.

22.

23. Which of the following illustrations is the model of

liquid water?

a. c.

b. . d.

23.

24. Which of the following situations possesses

radiant energy?

a. Waterfalls falling from a reef

b. A windy day

c. Heat coming from beneath the earths

surface

d. Heat of the sun

24.

25. Burning a piece of paper is a good example that shows

the release of chemical energy in matter. What two forms

of energy result in burning a piece of paper?

a. light and electrical

b. radiant and chemical

c. heat and light

d. nuclear and mechanical

25.

26. RM is cooking sinigang. She left the spoon on the pot,

after a few minutes the spoon felt very hot. What kind of

energy transfer is being shown?

a. radiation c. convection

b. conduction d. radiation

26.

-END OF SCIENCE TEST 1-


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27. Which of the following shows transformation

of chemical to mechanical energy?

a. burning paper c. a playing radio

b. moving car d. digestion of food

27.

28. Ace can run a 100-meter distance in 20 seconds. What

is his speed?

a. 7 m/s b. 8 m/s c. 5 m/s d. 10 m/s

28.

29. Which two objects are related in such a way that

the rst object possesses Mechanical energy causing the

second object to move?

a. re, paper c. television, guitar

b. toy car, ball d. radio, picture

29.

30. Why is it more difcult to stop a fully loaded truck

than an unloaded one?

a.because its mass affects acceleration

b. because it is affected by gravity

c. because it has less mass than the other

d. because it is bigger

30.

31. On what layer of the Earth does man live?

a. mantle c. outer core

b. crust d. inner core

31.

32. Why do earthquakes occur?

a. Because of shifting crustal plates

b. Because of very strong typhoons

c. Because of volcanic eruptions

d. Because of moving water underground

32.

33. In 1880, Alfred Wegner proposed the existence of a

huge landmass called ______________.

a. Panthalassa c. Tectonic

b. Moho d. Pangaea

33.

34. Which of the following statements about stars isTRUE?

1. All stars are near the Earth.

2. The hottest stars are color red.

3. The sun is the only star in our solar system.

4. Stars are small if they are far from the sun.

a. 1 only b. 2 only c. 3 only d. 3 and 4

34.

35. To which galaxy does our solar system

belong?

a. Magellanic c. Andromeda

b. Orion d. Milky Way

35.

36. The union of a sperm cell and egg is

called____________

a. Fertilization c. Reproduction

b. Ovulation d. Menstruation

36.

37. Which of the following is NOT part of the male

reproductive system? a. Sperm b. Penis c. Ovaries d. Testes

37.

38. Which part of the male reproductive organ produc-

es the sperm?

a. Testes or Gonad c. Vas deferens

b. Epididymis d. Seminal Vesicles

38.

39. What system of the body is responsible for produc-

ing offspring?

a. Respiratory System

b.Urinary System

c. Reproductive System

d. Skeletal System

39.

40. Which part of the male reproductive system cover

and hold the testes?

a. Scrotum c. Penis

b. Vas Deferens d. Urethra

40.

End of Science Test 5

Total Score: ___________

Rating: _______________

SCIENCE TEST 5


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SCIENCE TEST 2

1. Which of the following is the function of the

uterus?

a. Reproduce egg cell

b. Houses the developing embryo

c. Passageway of the fertilized egg

d. Receive the sperms

1.

2. What is the function of the reproductive system?

a. Eliminates liquid wastes from the body

b. Receives, conducts, integrates and interprets

impulses

c. Takes oxygen from the air and release

Carbon dioxide from the body

d. Enables living things to produce other living

organism like themselves

2.

3. Which part catches the fertilized egg and carries it to

the uterus for implantation?

a. Uterus c. Fallopian Tube

b. Ovaries d. Vagina

3.

4.During fertilization, a sperm cell meets the egg cell

and unite to create ovum. Where does the fertilization

takes place?

a. Uterus c. Fallopian Tube

b. Ovaries d. Cervix

4.

5. What is the function of the respiratory system?

a. Eliminates liquid wastes from the body

b. Receives, conducts, integrates and interprets

impulses

c. Takes oxygen from the air and release

Carbon dioxide from the body

d. Enables living things to produce other living

organism like themselves

5.

6.Where does the air go when a person breathes in?

a. into the heart c. into the lungs

b. into the stomach d. into the kidney

6.

Read and analyze each item carefully. Shade the letter that corresponds with the letter of your answer.

7.What are the smallest particles of a substance?

a. atom c. molecule

b. proton d. electron

7.

8. Elisa places her palm near a lighted bulb for a few

minutes. What will happen to her palm?

a. It will become warm because they

absorbed some of the heat that radiates

from the bulb.

b. It will become warm because heat is

conducted to them from the bulb.

c. The temperature of the palm will remain

the same because convection takes place.

d. The temperature of the palm will remain

the same because the palm did not touch

the bulb.

8.

9. One end of the metal rod touches the ame of the

burner. After several minutes, the other end becomes too

hot to hold. How is heat transferred to the end that is

away from the ame?

a. By convection

b. By conduction

c. By radiation

d. Both a and b

9.

10. Why do falling objects accelerate when they

become closer to the center of the earth?

a. Their mass increases as they become

closer to the earth.

b. The direction of motion changes as they

come nearer the surface of the earth.

c. Their size increases as they come closer

to the center of the earth.

d. The pull of gravity becomes greater as

they grow closer to the center of the earth.

10.

11. Why is it necessary to read the labels of materials

before buying and using them?

a. To know if they are imported

b. To know how much they cost.

c. To know their composition and how

they should be used.

d. To know where they come from.

11.

-direct contact


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11. What best described an object has moved?

a. When its weight changed in relation to

its mass.

b. When force was exerted on the object.

c. When the object has more acquired energy.

d. When it has changed position in relation

to a reference point.

11.

12. Light travels in a _____.

a. any direction c. straight line

b. curved line d. circular motion

12.

13. What materials allow electricity to pass through?

a. Insulator c. conductor

b. source d. transmission

13.

14. Which of the following denes

ACCELERATION?

a. It is the distance traveled over time.

b. It is speed in a specic direction.c. It is the product between distance and time.

d. It is the change in velocity over time.

14.

15. The automatic responses to stimuli that may not re-

quire any communications with the brain are

a. impulses

b. motor messages

c. sensory messagesd. reexes

15.

16. Which of these is a voluntary action?

a. heartbeat c. jumping.

b. breathing d. digestion

16.

17. In which of the respiratory system does the exchange

of gases occur?

a. Bronchial Tubes c. trachea

b. Alveoli d. Bronchi

17.

SCIENCE TEST 2

18. As part of the respiratory system, what is the

function of the alveoli?

a. It allows air to move from trachea to

the lungs

b. It brings the carbon dioxide to all parts

of the body through its blood vessels

c. It allows the exchange of oxygen andcarbon dioxide to take place on

its thin wall

d. It separates the oxygen from carbon

dioxide and contributes to other parts

of the body

18.

19. Which of the following is the function of the lungs?

a. To purify the air we breathe

b. To transport the puried air to thebloodstream

c. To serve as passageway of air from the

nostril to the chest cavity

d. To prevent the entry of food and water into

the respiratory system

19.

20. What is the little ap on top of the windpipe called?

a. Pharynx c. Epiglottis

b. Bronchi d. Alveoli

20.

21.Which of this is NOT a part of the circulatory sys-

tem?

a.heart c. nerves

b. blood vessels d. blood

21.

22. Each contraction and relaxation of the heart muscleis called _______.

a. circulation c. respiration

b. blood pressure d. heartbeat

22.

23. The main and largest artery of the body is _______.

a. atria c. aorta

b. auricle d. ventricles

23.

24. How does the heart work?

a. It transports food and oxygen.

b. It carries antibodies and hormones to the cell.

c. It regulates body temperature

d. All of the above

24.

change numberingto 12 andonwards..

explain the formulafor speed, velocity,and acceleration Nervous

System

change "heart"

to BLOOD


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25. The red coloring matter of the blood is called ..

a. plasma c. hemoglobin

b. platelets d. leucocytes

25.

26. How long does it take the blood to complete the bodyscirculation?

a. One second c. one minute

b. ve minutes d. one hour

26.

27. The fatty substance that may block the blood vessels

is called _________.

a. nutrients c. carbon monoxide

b. colostrums d. cholesterol

27.

28. What substances help the body make antibodies?

a. oxygen c. antigens

b. leucocytes d. platelets

28.

29. Which makes the blood become bright red?

a.carbon dioxide c. oxygen

b. nitrogen d. food nutrients

29.

30. All of these are functions of the nervous system ex-

cept one. Which is it?

a. It controls the activities of the body parts.

b. It circulates food and oxygen to the body.

c. It brings in messages from the outside world.

d. It interprets and receives messages.

30.

31.The brain plays a vital role because ________.

a. It pumps blood to the body.

b. It ignites muscular movement.

c. It acts as the control center of the body.

d. It causes reex actions.

31.

32.The center of thinking, learning, memory and emo-

tions in the brain.

a. cerebrum c. cerebellumb. medulla d. hypothalamus

32.

23.Which of these controls balance and equilibrium?

a. cerebrum c. cerebellum

b. medulla d. nerve

33.

34. Which of these is a voluntary action?

a. heartbeat c. jumping.

b. breathing d. digestion

34.

35. Axons are wrapped in a fatty substancecalled ________.

a. dendrite c. nucleus

b. receptor d. myelin

35.

36. The main connecting cable between the brain and

the body is the .

a. central nervous system c. spinal cord

b. peripheral nervous system d. nerves

36.

37. Plants that have the hardest woody structures like

mango, guava and narra.

a. trees b. vines c. shrubs d. herbs

37.

38. A kind of owering plant that have one

seed leaf like corns and grass. a. monocot b. dicot c. vine d. shrub

38.

39. Plants that live on water like water lily and sea

weeds are called ---

a. terrestial plants c. arboreal plants

b. aquatic plants d. owering plants

39.

40. Its the ability of an organism to adjust to the envi-

ronment is called _______.

a. habitat c. adaptation

b. community d. location

40.

SCIENCE TEST 2



Rating: _______________

or white blood cells

function ofCirculatory

S stem

change to 33.

air lants

land plants


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SCIENCE TEST 3Read and analyze each item carefully. BLACKEN the letter that corresponds with the letter of your answer.

1. Animals that eat esh like lion, vulture and hyena are

classied as:

a. herbivores c. carnivores

b. omnivores d. none

1.

2. Animals that eat both esh and plants like man and

other domestic animals are classied as:

a. herbivores c. carnivores

b. omnivores d. none

2.

3. What happens during breathing?

a. The chest rises, the diaphragm curves upward,

air rushes out. The chest moves downward,

the diaphragm attens, air rushes in.

b.The chest rises, the diaphragm curves upward,

air rushes in. The chest moves downward, the

diaphragm attens, air rushes out.

c. The chest rises, the diaphragm attens, and

air rushes out. The chest moves downward,

the diaphragm curves upward, air rushes in.

d. The chest rises, the diaphragm curves

upward, air rushes in. The chest movesdownward, the diaphragm curves upward,

air rushes out.

3.

4. Which of the following denes Ecosystem?

a. Composed of air, soil and water.

b. A group of population that lives in a

particular area.

c. An environment where both living andnon-living things lives and interacts with

each other.

d. The relationship between two organisms

in which at least one organism benets.

4.

5. Which statement describes how air enters the body?

a. As the mouth opens, air enters the body.

b. As the diaphragm relaxes, air enters the bodythrough the nose.

c. As the nose inhales air, the diaphragm

contracts to allow the air to enter the body.

d. As the diaphragm contracts, air enters the

body through the nose and mouth.

5.

6. These are also known as the living things in an eco-

system. What are these called?

a. Biotic c. Antibioticb. Abiotic d. Abiosis

6.

7. Which of the arrows describe the path of inhaled air?

a. Nose ----- trachea ----- bronchi

b. Nose ----- trachea----- air sacs

c. Nose -----trachea ----- trachea

d. Nose -----trachea ----- larynx

7.

8. The Respiratory System is made up of the tra-

chea, the lungs and the __

a. liver c. bronchi

b. diaphragm d. pancreas

8.

9. When you inhale, your lungs _____

a. inate b. deate c. turn purple d. shiver

9.

10. Your body couldnt breathe without system. Which

one is it?

a. Perspiration System

b. Respiratory System

c. Digestive System

d. Urinary System

10.

11. When you breathe in air, you bring oxygen into yourlungs and release _

a. carbon dioxide c. oxygen

b. carbon monoxide d. hydrogen

11.

12. The diaphragm below shows the path of air in the

respiratory system. Fill in the missing part to complete

the path of air in the body.

AIR -- NOSE -- PHARYNX --- LARNYX --

TRACHEA --- LUNGS --- _____ a. alveoli b. epiglottis c. bronchi d. glottis

12.

13. What is the name of your tiny air sacs in the lungs?

a. bronchioles b. alveoli c. ravioli d. Bronx

13.


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SCIENCE TEST 3

14. ______ is not good for your lungs.

a. Exercising c. Singing

b. Smoking d. Yelling

14.

15. The trachea is also called the ____ a. lung b. windpipe c. diaphragm d. bronchi

15.

16. Which of the following tiny hairs keep mucus and

dirt out of your lungs?

a. hair b. bronchioles c. stubble d. cilia

16.

17. The voice box is also known as the -.

a. alveoli b. trachea c. larynx d. mouth

17.

18. Which is the correct pathway for the elimination of

the urine?

a. kidneys, bladder, ureters, urethra

b. kidneys, urethra, bladders,ureters

c. kidneys, urethra, bladders,ureters

d. kidneys, ureters, bladders,urethra

18.

19. Which of the following adaptation does the Walking

stick insects have?

a. protective mimicry c. warning coloration

b. protective coloration d. adaptive coloration

19.

20. How do clams, oysters, and snails protect

themselves?

a. secreting poison

b. means of their spines

c. using their hard shells

d. making slimy secretions

20.

21. Why do snakes dig themselves into the soil?

a. To hide from the young

b. To change their skin.

c. To look for food.

d. To keep away from danger.

21.

22. How do desert animals adjust to very high tem-

perature and lack of water in the area?

a. They shed their skin.

b. They become active during daytime.

c. They lose much water from their bodies.

d. They use stored water in their bodies.

22.

23. Poison dart frogs, coral snakes, and wasps have

developed bright colors that make then easily visible

to warn their enemies that they are poisonous. What

kind of protective adaptation is this?

a. Warning coloration c. Toxic coloration

b. Mimicry d. Camouage

23.

24. Which of the following is an example ofMimicry in animals?

a. A praying mantis that looks like a leaf.

b. A chameleon can easily change the color

of its skin to blend with the environment

c. A bumblebee which is not poisonous has

the same color with wasps that are

poisonous.

d. A coral snake has bright red-orange and

white-black stripes that tell the predator

that it is harmful.

24.

25. How do spines which are modied leaves of cacti

become adaptive structures?

a. They allow the plant to reduce air intake.

b. They provide the plant with more water.

c. They prevent too much loss of water.

d. They help the plant to release oxygen.

25.

26. How do plants like amorseco adapted for

reproduction?

a. It has feathery structures that when carried

away by the wind can easily be dispersed.

b. It has hooks that can attach to bodies

of animals and clothing of humans and

help in reproduction.

c. It can be easily dispersed by water.

d. It can reproduce by means of pollination.

26.

27. How do owers adapt for reproduction?

a. They use their color to attract insects.

b. The fragrance helps attract bees and

buttery to help in pollination.

c. Wind helps sampaguita in pollination

d. Water aids the plant reproduction.

27.

or Camouflage

change

Snakes to Rats


9/17

SCIENCE TEST 3

28. What is the function of the nervous system?

a. Regulates and coordinates bodily activities.

b. Pumps blood throughout the body.

c. Serves as the transport system of the body.

d. Removes and destroys toxic substances

28.

29. What comprises the nervous system?

a. heart, blood, blood vessels

b. cerebrum, cerebellum, midbrain

c. brain, spinal cord, nerve cell

d. axon, dendrites, cell body

29.

30. What body system is represented by the

illustration?

a. Circulatory system c. Nervous system b. Digestive system d. Respiratory system

30.

31. Which part of the Urinary System is a muscular

sac which stores urine before it passes out of

the body?

a. kidneys c. urether

b. urinary bladder d. urethra

31.

32. What happened to the unwanted substance and water

in the body?

a. urine b. perspiration c. feces d. body odor

32.

33. In the food web, which group are animal-eating

organisms?

a. caterpillar, grasshopper, pig

b. grasshopper, chicken, snake

c. man, chicken, snake

d. caterpillar, pig, man

33.

34. The union of egg from female organ and the sperm

from the male organ is known as fertilization. In which

part does the fertilization takes place?

a. fallopian tube c. ovary

b. uterus d. cervix

34.

35. Which part of the brain controls the activities of

the body such as thinking, memorizing and decision-

making?

a. cerebrum c. medulla

b. cerebellum d. spinal cord

35.

36. Which part of the brain controls the balance and

equilibrium?

a. cerebrum c. medulla

b. cerebellum d. spinal cord

36.

37. Study the different groups of animals. Whichset of titles below would best label the two boxes?

a. Box A: Vertebrates : reptiles

Box B: Vertebrates: mammals

b. Box A: Vertebrates: mammals

Box B: Vertebrates: reptile

c. Box A: Vertebrates: mammals

Box B: Vertebrates: amphibians

d. Box A: Vertebrates

Box B: Invertebrates

37.

38. Crabs, sponges, oysters dont have backbones.

What are these animals?

a. vertebrates c. invertebrates

b. arthropods d. worms

38.

39. What kind of animals eats esh?

a. carnivores c. herbivores

b. omnivores d. mammals

39.

40. The process in which animals produce new off-

springs is called _________.

a. Reproduction b. Photosynthesis

c. Fertilization

d. Adaptation

40.



Rating: _______________

showillustrationof Digestive

S stem


10/17

SCIENCE TEST 4Read and analyze each item carefully. Blacken the letter that corresponds with the letter of your answer.

1. Why do animals live in a particular environment?

a. They like to stay with other animals.

b. They are too lazy to go to a different place. c. They can get the food they need.

d. All of the above

1.

2. Which of the following animals uses their long and

sticky tongue to get food?

a. snakes c. monitor lizard

b. frogs d. alligators

2.

3. Some animals have teeth. Some have beaks. Others

have mouths with tubes. What does this show?

a. Animals have different sizes.

b. Animals need food in order to grow.

c. Animals live in different environments.

d. Animals have different structures for eating.

3.

4. What is the straw-like structure used by butteries,

ies, and mosquitoes to get food?

a. antennae c. thorax

b. sticky tongue d. proboscis

4.

5. Which of the following is/are OMNIVORE(S)? I. chicken II. monkeys III. pigs IV. dogs

a. I and II c. I, III, IV

b. II and IV d. I, II, III, and IV

5.

6. Carabaos, horses, and goats eat only plants. What are

these animals called?

a. Herbivores c. Carnivores

b. Omnivores d. Insectivores

6.

47. Primates, apes, and humans are all examples of:

a. . Herbivores c. Carnivores

b. Omnivores d. Insectivores

7.

8. Which of the following adaptations are used by

animals to protect themselves against their

predators?

a. Having sharp teeth, horns, or claws

b. Ability to blend with the environment

c. Secretes substances such as foul odor and

venom.


8.

9. These are animals that have backbones.

a. vertebrates c. invertebrates

b. mammals d. arthropods

9.

10. Which of the following is NOT a vertebrate?

a. tilapia b. turtle c. lizards d. scorpions

10.

11. These are vertebrates that usually have tails, ns, and

gills. What are these?

a. Reptiles c. Mammalsb. Amphibians d. Fishes

11.

12. These are vertebrates that spend part of their lives

in water, and part on land.

a. Reptiles c. Mammals

b. Amphibians d. Fishes

12.

13. These vertebrates have bodies that are covered

with scales and lay their eggs on land.

a. Reptiles c. Mammals

b. Amphibians d. Fishes

13.

14. Which of the following describes a Mammal?

a.They nourish their young with milk.

b. Their body covering is hair.

c. They have mammary glands.


14.

15. Which is NOT a mammal?

a. Whale Shark c. Koala

b. Dolphins d. Blue whale

15.

change to 7.

whale sharksare Fishes


11/17

16. Which of the following classication of vertebrates is

correctly paired with its example?

a. reptile frog c. amphibian scorpion

b. mammal bats d. sh - dolphins

16.

17.The duckbill platypus and the Australian anteater aremammals that lay eggs. What are they called?

a. Monotremes c. Marsupials

b. Placental d. Developmental

17.

18. Which of the following is NOT a Placental mammal?

a. skunk c. camel

b. whale d. kangaroo

18.

19. These are invertebrates that usually have spines in their

skin.

a. Arthropods c. Echinoderms

b. Annelida d. Cnidarian

19.

20. Which of the following is an Insect?

a. spider c. millipedeb. centipede d. mosquito

20.

21. Why should people take care of the plants?

a. Plants make their own food.

b. Plants attract bees and owers.

c. Plants are living things.

d. Plants provide food for man and animals.

21.

22. A group of vertebrate animals that are lung - breath-

ing and nourish their young.

a. amphibians c. mammals

b. reptiles d. sh

22.

23. The group of vertebrate animals that are coveredwith scales to protect the skin surface of their body.

a. amphibians c. mammals

b. reptiles d. sh

23.

24. Which of these animals does not belong to

the group?

a. heron c. albatross

b. ostrich d. frog

24.

25. Ability of an animal to blend to itssurrounding to escape its enemy.

a. adaptation c. camouage

b. habitat d. location

25.

26. In which part of the female reproductive organ does

a fertilized egg normally develop into a baby?

a.Fallopian Tube c. Uterus

b. Vagina d. Cervix

26.

27. Which part of the female reproductive system are

the cells formed or produced?

a. Uterus c. Cervix

b. Vagina d. Ovaries

27.

28.Which part of the female reproductive system where

fertilization takes place? a. Fallopian Tube c. Cervix

b. Ovaries d. Uterus

28.

29. Which part of the male reproductive system pro-

duces the sperm cells and secretes the male sex hor-

mone called TESTOSTERONE?

a. Testes c. Epididymis

b. Vas deferens d. Urethra

29.

30. Which part of the Female reproductive system

produces the egg and secretes the female sex hormones

called ESTROGEN and PROGESTERONE?

a. Ovaries c. Cervix

b. Fallopian Tube d. Uterus

30.

SCIENCE TEST 4



Rating: _______________

kangaroos areMarsupials

or


12/17


Use the diagram of the Female Reproductive System

below to answer items 1 and 2.

1. What is the function of Part II above?

a. It protects the unborn fetus.

b. It produces the egg cells.

c. It serves as food for the growing fetus.

d. It controls the female hormonal balance.

1.

2. In normal situation, in which part is the egg cell

fertilized by the sperm cell?a. Part I c. Part III

b. Part II d. Part IV

2.

3. How does oxygen enter our body?

a. Through the hole of our ears.

b. Through the pores in our skin.

c. Through the esophagus.

d. Through the nose.

3.

4. We breathe air during inhaling process. Which

statement is TRUE during this process?

a. Lungs get smaller.

b. Diaphragm moves up.

c. Chest region expands.

d. Chest region becomes smaller.

4.

5. Our kidney has thousands of ltering structures

that remove wastes from the blood. Which are these

structures?

a. Cortex c. Nephrons

b. Medulla d. Glomerulus

5.

Refer to the diagram of the Urinary System below to

answer Item 6.

6. Which part above is the Urethra? a. Part I c. Part III

b. Part II d. Part IV

6.

7. How do polar animals like polar bears behave to keep

them from being too cold during winter seasons?

a. They sleep underground for a long time.

b. The develop lighter body coverings.

c. They change their protective coverings.

d. They transfer to other places.7.

8. How does this animal catch its prey?

a. By using its long, hind, legs.

b. By trapping the pray with its web.c. By injecting poisons from its jaws.

d. By sticking its saliva into the prey.

8.

For items number 9 and 10, refer to this chart.

fallopian tube

uterusovary

cervix/vagina

hibernation

shedding

migration

fishes

amphibians

reptiles

birds

mammals


13/17

9. Vertebrates are classied into ve (5) subgroups as shown

in the chart. To which group do Bats and Dovesbelong?

a. They both belong to Group 4.

b. They both belong to Group 5.

c. Bats belong to Group 4, while doves belong to

Group 5.

d. Bats belong to Group 5, while doves belong to

Group 4.

9.

10. Using the same chart, to which group does this animal

belong?

a. Group 1 b. Group 2 c. Group 3 d. Group 4

10.

11. What characteristics of Rose plants protect them from

animals?

a. Having hooks on their leaves.

b. Having thorns on their stem.

c. Having owers with foul odor.

d. Having tendrils for climbing.

11.

12. How does a Cactus plang survive in a hot

environment?

a. It stores food in its huge roots.

b. It stores water in its large stem.

c. It has a waxy covering on its stem.

d. It has needle-like hairs on its stem.

12.

13. Which process turns water vapor into liquid form in the

form of clouds?

a. distillation c. transpiration

c. evaporation d. condensation

13.

14. Which of the following physical changes happens

during evaporation?

a. Change from liquid to gas b. Change from liquid to ice

c. Change from ice to liquid

d. Change from gas to liquid

14.

15. Which of the following is TRUE to all planets of the

Solar System?

a. All can sustain life.

b. All revolve around the sun.

c. All have the same speed.

d. All have the same atmospheric composition. 15.

16. What makes Planet Earth unique from other

planets?

a. It has the longest time of rotation.

b. It has the longest period of revolution.

c. It has no magnetic eld.

d. It has oxygen that supports the needs of

living things.

16.

17. Which of the following shows chemical change in

matter?

I. II.

reworks Rusting

III.

Ripening Oranges

a. I and II c. I and III

b. II and III d. I, II, and III

17.

18. Which is the function of the nervous system in our

body?

a. It controls all body systems.

b. It removes liquid waste materials.

c. It transports blood and nutrients to all parts

of the body.

d. It carries oxygen to the cells and removes

carbon dioxide.

19.

20 Anything that moves quickly towards our face may

cause our eyes to blink. Which function of the nervous

system does this behavior refer to?

a. Long - Term memory

b. Reex reactions

c. Learned Responses

d. Short-Term memory

20.

SCIENCE TEST 1

plant


14/17

SCIENCE TEST 1

-

21. Which illustrations show the Circulatory System and

the Nervous System?

I III

II V

a. I and II c. I and IV

b. II and III d. III and IV

21.

22. Which of the diagrams below show the feeding inter-

relationships among the plant and animals listed below?

a. b.

c. d.

22.

For items 23 to 24, study this set of living things in a

ricefeld ecosystem.

23. In a producer-consumer relationship, which of the

following is the second-order consumer?

a. Rice c. Frog

b. Insect d. Eagle

23.

Corn Snake Insect Frog Eagle

Corn Insect Frog

SnakeEagle

24. If all rice plants died, which animal is badly affected?

a. Snake c. Frog

b. Insect d. Eagle

24.

25. Some chemical sprays containing CFCs used byhumans have caused the thinning and formation of holes

in the ozone layer resulting to more ultraviolet (UV)

light to reach the Earth. Biologists are alarmed that an

increased UV light will harm marine algae. What would

happen to the marine animals if this continues?

a. Their population would increase.

b. Their population would decrease.

c. They would reproduce fast.

d. They would not be affected.

25.

Study the diagram below and answer item nos. 26 to 28.

Carbon Dioxide

Oxygen

26. Using the diagram, which is TRUE?

a. Plants give off oxygen for animals

consumption.

b. Animals release oxygen for plants.c. Plants give off oxygen and carbon dioxide for

animals.

d. Animals give off oxygen and carbon dioxide

for plants.

26.

27. In the cycle, what gas is absorbed by plants that is

released by the animal?

a. Nitrates c. Nitrogen

b. Oxygen d. Carbon Dioxide

27.

28. During photosynthesis, from where do plants get

energy to make food?

a. Sunlight c. Minerals

b. Animals d. Atmosphere

28.

29. Preservatives, like sodium nitrate or salitre, areadded to meat to make tocino and longaniza. However,

they may have harmful effects. Which is one of them?

a. Sudden loss of appetite

b. Cause of skin problems

c. May cause digestive disorder like colon

cancer

d. Potential cause of insomia

29.

Rice Snake Insect Frog Eagle

primary consumer


15/17

30. Which of the following can have harmful effect on

the environment?

I. II.

III.

a. I only c. I and III

b. II only d. I and II 30.

31. Vina observed that after switching on an electric

hair dyer, the air becomes warmer. She noticed that the

blades inside the dryer rotate, and emit warm air. What

forms of energy are involved?

a. Electrical -- heat -- mechanical

b. Mechanical -- heat -- electrical

c. Electrical -- mechanical -- heat

31.

32. Which statement about energy is TRUE?

a. Chemical energy enables a whistle to

produce sound.

b. Electrical energy enables a TV to turn on.

c. Radiant energy enables a plane to y.

d. Mechanical energy causes the fruits to rot.

32.

33. Which two objects are related in such a way thatrst object possessess chemical energy causing the

second object to move?

a. Wind : Kite c. Flat iron : clothes

b. Food : Person d. Door bell : sound

33.

34. A ball that is dropped on the oor bounces after it

hits the oor. Which of the following could affect how

high the ball bounces?

I. Time of the day when the ball is dropped.II. Height from which the ball is dropped.

III. Hardness of surface on which the ball is

dropped.

a. I only b. III only c. I and II d. II and III

34.

SCIENCE TEST 1

35. Imagine yourself sitting on a chair in front of a big

table. As you push the heavy table, your chair moves

backward. Which statement explains this?

a. Object in motion tend to remain in motion.

b. Objects at rest tend to remain at rest.

c. For every action, there is an equal and

opposite reaction.

d. Balanced forces acting on an object do not

make the object move.

35.

36. Vanessa found that it was easier to push a cart

barefooted that when she was wearing shoes along the

cemented oor. What caused this difference?

a. Friction is greater between the wheels of the

cart and the shoes.

b. Surface of the oor is smooth.

c. Mass of the wheelbarrow and the load.d. Friction between the bare feet and the ground

is greater than with shoes.

36.

37. We do not feel the movement of the Earths crust

but in reality it continually moves. Why is the earths

crust in constant motion?

a. It oats on a mantle of liquid rocks that

constantly heat and move.

b. It is divided into smaller hot plates.c. It has big bodies of water like the oceans.

d. It has a magnetic eld.

37.

38. Which of the following is the hottest layer of the

earth?

a. Crust c. Inner Core

b. Mantle d. Outer Core

38.39. Below are some beliefs of the uses of star groupings

we call as constellations. Which of them have scientic

basis?

I. It predicts the future.

II. Guide farmers when to plant.

III. It can serve as direction/compass when lost.

IV. It can help in scheduling the lucky dates of

major events like wedding day.

a. I and II b. I and IV c. II and III d. III and IV

39.

40. The Sun is one of the stars. Which characteristic is

TRUE about it?

a. It is the hottest among all stars.

b. It is the only yellow stars.

c. It is the biggest among all stars.

d. It is the nearest to Earth among all stars.

40.

change choices to:A. I B. II C. III D. IV


16/17


1. What makes up the skeletal system?

a.All the bones in the body

b. All the body organs c. All the muscles and tendons

d. All the bones in the body and the tissues

that connects them.

1.

2. What joins a bone to another bone?

a. Cartilage b. Ligament c. Muscle d. Tendon

2.

3. What does the ribcage protect?

a. Liver c. Spinal cord

b. Brain d. Heart and lungs

3.

4. The muscles of your stomach and heart work even

when you are sleeping. What are these muscles called?

a. Involuntary c. Smooth

b. Lung d. Stomach

4.

5. In which organ are cardiac muscles found?

a. Heart b. intestine c. lung d. stomach

5.

6.What is the correct sequence of development in a

complete metamorphosis?

A- Adult B- Larva C- Pupa D- Egg

a. A-B-C-D c. D-B-C-A

b. D-C-B-A d. B-D-C-A

6.

7. What do you call the turning of Earth about its axis?

a. revolution c. orbit

b. rotation d. tilt

7.

8. What causes day and night?

a. The gravity of the Earth.b. The direction of the Earths revolution.

c. The rotation of the Earth.

d. The rotation of the moon.

8.

9. This is the point of the Earth that is farthest from the

Sun.

a. apogee c. aphelion

b. perigee d. perihelion

9.

10. How many days does it take for the Earth to

complete one revolution?

a. 366 b. 365 c. 365 d. 365

10.

11. Which of the following illustrations shows thecorrect position of the Earth and the Moon during a Solar

Eclipse?

a. c.

b. d.

11.

12. The tiny part of a seed that can you grow into a

new plant is called ________.

A. Embryo C. Ovule

B. Ovary D. Pistil

12.

13. What supplies food to the developing embryo?

A. Cotyledon C. Embryo

b. Endosperm D. Radicle

13.

14. Which of the following plants can grow from a

bulb?

a. Onion b. Potato c. Ginger d. Kangkong

14.

15. Which of these statements is true about mixtures?

I. A mixture is a combination of two or more

substancesII. A mixture is a combination of two or more

substances w/c can be separated

III. A mixture consists of one particular substance

IV. A mixture does not form a new substances

A. I,II,III B. II,III,IV C. I,II,IV D. II,III,IV

15.

nearest to the sun


17/17

16. Which form a homogenous mixtures?

A. Water & Soil C. Sugar & Water

B. Sand & Water D. Sand & Iron lings

16.

17. How can you make a powdered orange juicedissolve faster?

A. By stirring

B. By putting ice cube

C. By mixing with hot water

D. Both A & B

17.

18. Which of the following is NOT a mammal?

a. Whale b. Bat c. dolphin d. frog

18.

19. This is the process where the pollen grains are

carried from the anther to the stigma of another ower.

a. Cross pollination c. Self-pollination

b. fertilization d. stigmatization

19.

20. The process of food-making in plants is called:

a. Photosynthesis c Respirationb. Transpiration d. Fertilization

20.

21. What is the basic unit of life?

a. Cell b. tissue c. organ d. sytem

21.

22. This is the passageway through which food moves

into the body.a. Mouth b. Esophagus c. Trachea d. intestine

22.

23. This is a type of cloud which form at a high altitude and

appears feathery.

a. Cumulus b. Nimbus c. Stratus d. Cirrus

23.

24. Electricity at rest is called:

a. Static electricity c. Dry cell

b. Kinetic electricity d. Live electricity

24.

25. This is the instrument used to measure wind

direction.

a. Barometer c. Wind Vane

b. anemometer d. thermometer

25.

26. It is considered as the universal solvent.

a. Salt b. Alcohol c. Water d. Vinegar

26.

27. What makes up 78% of our atmosphere?

a. Oxygen c. Nitrogen

b. Carbon dioxide d. Hydrogen

27.

28. These are plants that only live for one year.

a. Perennial b. Nocturnal c. Annual d. Diurnal

28.

29. This is a type of simple machine which consists of a

rope that passes over a grooved wheel.

a. Lever b. Screw c. Wheel and Axle d. Pulley

29.

30. On the Celcius temperature scale, the freezing point

of water is ______.

a. 32C b. 0C c. 273C d. 100C

30.

31. The process where plants, animals, and human beings

produce new organisms or become many is called:

a. perspiration c. respiration

b. reproduction d. circulation

31.

32. Where does fertilization take place?

a. fallopian tube c. cervix

b. ovaries d. uterus

32.

33. These are the sex glands located in the scrotum, which

produces sperms and the hormone testosterone.

a. prostate gland c. epididymis

b. vas deferens d. testes

33.

34. 7. On the average, boys normally reach puberty dur-

ing the age of:

a. 9-14 years old c. 15-20 years old

b. 10-17 years old d. 21-39 years old

34.

SCIENCE TEST 6

change to"both A & C"

answer key nat reviewer

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