Ecosystem ReviewEcosystem Review

The reactants in the process The reactants in the process of photosynthesis areof photosynthesis are

A.A. Chlorophyll and lightChlorophyll and light

B.B. Glucose and oxygenGlucose and oxygen

C.C. Water and carbon dioxideWater and carbon dioxide

D.D. Water and oxygenWater and oxygen

Why must all animals rely Why must all animals rely on producers for food?on producers for food?

A.A. Animals are not able to make their own Animals are not able to make their own food.food.

B.B. Animals are smarter than consumersAnimals are smarter than consumers

C.C. There are more producers than animalsThere are more producers than animals

D.D. Animals don’t need producers to make Animals don’t need producers to make their food.their food.

The _____and ____ are in The _____and ____ are in competition in their competition in their ecosystem.ecosystem.

A. worms and beesA. worms and bees B. grass and dandelionsB. grass and dandelions C robins and cloverC robins and clover D. moles and chivesD. moles and chives

True or FalseTrue or False

Decomposers are nature’s recyclers and Decomposers are nature’s recyclers and are needed for life to continue on Earth.are needed for life to continue on Earth.

Which of the organisms in Which of the organisms in an ecosystem make energy an ecosystem make energy for it?for it?

A.A. producersproducers

B.B. consumersconsumers

C.C. decomposersdecomposers

D.D. scavengersscavengers

Why is the grass growing Why is the grass growing under a tree not as healthy under a tree not as healthy as that growing in an open as that growing in an open field? field?

A. Grass can’t grow under a tree.A. Grass can’t grow under a tree. B. The temperature under the tree is too cold.B. The temperature under the tree is too cold. C. People trample the grass under the tree.C. People trample the grass under the tree. D. The tree limits the amount of sunlight, D. The tree limits the amount of sunlight,

nutrients and water the grass gets.nutrients and water the grass gets.

True or FalseTrue or False

The Law of Conservation of Energy The Law of Conservation of Energy states that energy cannot be created or states that energy cannot be created or destroyed.destroyed.

Sunlight is a limiting Sunlight is a limiting factor because_____.factor because_____.

A. it is necessary for photosynthesis to A. it is necessary for photosynthesis to occuroccur

B. the amount of time we have it is B. the amount of time we have it is limitedlimited

C. it evaporates the water and makes C. it evaporates the water and makes rain.rain.

D. it varies with the time of day.D. it varies with the time of day.

True or FalseTrue or False

Respiration is done by all organisms.Respiration is done by all organisms.

Which of the following Which of the following organisms have a parasitic organisms have a parasitic relationship?relationship?

A.A. Bird and wormBird and worm

B.B. Flea and dogFlea and dog

C.C. Clownfish and sea anemoneClownfish and sea anemone

D.D. Fly and maggotFly and maggot

What does a food web What does a food web show?show?

A.A. How a spider gets its food.How a spider gets its food.

B.B. How the biotic and abiotic factors affect How the biotic and abiotic factors affect each othereach other

C.C. The feeding relationships in an The feeding relationships in an ecosystemecosystem

D.D. Why biodiversity is not necessary for an Why biodiversity is not necessary for an ecosystem.ecosystem.

True or FalseTrue or False

In a mutualistic relationship one organism In a mutualistic relationship one organism benefits and the other is harmed.benefits and the other is harmed.

Why are there fewer Why are there fewer organisms at the top of organisms at the top of the energy pyramid?the energy pyramid?

A.A. The top is where the producers are found.The top is where the producers are found.B.B. Some energy at each level is used by the Some energy at each level is used by the

organism on that level.organism on that level.C.C. The organisms are smaller in size as you go The organisms are smaller in size as you go

up the pyramid.up the pyramid.D.D. The decomposers are using some of the The decomposers are using some of the

energy.energy.

True or FalseTrue or False

The products of photosynthesis are water The products of photosynthesis are water and oxygen.and oxygen.

What powers the process What powers the process of photosynthesis?of photosynthesis?

A.A. The atomThe atom

B.B. The sunThe sun

C.C. SugarSugar

D.D. The earthThe earth

Dandelions, clover, grass, Dandelions, clover, grass, and chives are all_______.and chives are all_______.

A. consumersA. consumers B. biotic factorsB. biotic factors C. decomposersC. decomposers D. predatorsD. predators

What chemical contains the What chemical contains the energy organisms need?energy organisms need?

A. chlorophyllA. chlorophyll B. waterB. water C. carbon dioxideC. carbon dioxide D. glucoseD. glucose

True or FalseTrue or False

Light energy for the plant to use in Light energy for the plant to use in making food is trapped by the glucose in making food is trapped by the glucose in the leaves.the leaves.

A catalyst for A catalyst for photosynthesis is______.photosynthesis is______.

A.A. ChlorophyllChlorophyll

B.B. Glucose Glucose

C.C. Carbon dioxideCarbon dioxide

D.D. Heat energyHeat energy

In the body chemical In the body chemical energy is converted into energy is converted into ____ and ____ by the ____ and ____ by the process of respiration.process of respiration.

A.A. Mechanical energy and heatMechanical energy and heat

B.B. Solar energy and heatSolar energy and heat

C.C. Sugar and carbon dioxideSugar and carbon dioxide

D.D. Heat energy and sugarHeat energy and sugar

Which of the following is Which of the following is not a biotic factor?not a biotic factor?

A.A. AntsAnts

B.B. EarthwormsEarthworms

C.C. GrassGrass

D.D. SoilSoil

True or FalseTrue or False

Light (solar) energy is changed into Light (solar) energy is changed into chemical energy in the process of chemical energy in the process of phtosynthesis.phtosynthesis.

Why do polar bears have a Why do polar bears have a thick layer of fat under their thick layer of fat under their skin? skin?

A.A. It is an adaptation to living where the It is an adaptation to living where the temperature is very cold.temperature is very cold.

B.B. They hibernate for short periods of time.They hibernate for short periods of time.

C.C. The eat foods which turn to fatThe eat foods which turn to fat

D.D. They do not get enough exercise.They do not get enough exercise.

True or FalseTrue or False

Chemical energy is stored in the bonds Chemical energy is stored in the bonds between atoms.between atoms.

Which of the following Which of the following organisms have a organisms have a mutualistic relationship?mutualistic relationship?

A.A. Wolf and mooseWolf and moose

B.B. Man and misquitoMan and misquito

C.C. Clownfish and sea anemoneClownfish and sea anemone

D.D. Tic and deerTic and deer

True or FalseTrue or False

The products of respiration are glucose The products of respiration are glucose and energy.and energy.