BIOLOGY QUIZ

Grasshopper

I, II, IV

B

B

• Which of the following is the most suitable method of estimating the population size of earthworms?

A. Tullgren funnelB. Quadrat methodC. Baermann funnelD. Capture-mark-release and recapture method

Commensalism

Parasitism

• Which of the following abiotic factors is the least likely to affect the distribution of Pleurococcus sp. on the bark of trees?

A. HumidityB. Water run-offC. Light intensityD. CO2 concentration

D

D

Saprophytes

C

C

• Which of the following is not an example of bacteria that frequently causes food poisoning?

A. SalmonellaB. ClostridiumC. BacteriophageD. Staphylococcus

Prop root

• Organisms of the same class belong to the same

A. OrderB. FamilyC. GenusD. Phylum

D

D

Submerged water plant, floating plant, amphibious plant, land plant

Avicennia sp.

• Cholera is carried by the vectorA. Aedes mosquitoB. Cholera bacteriaC. Anopheles mosquitoD. Musca domestica fly

D

D

700

I, II, III, IV

I, II, III, IV

• Food is considered contaminated if there are

I GermsII Foul or unusual smellIII Changes in its original colourIV Minute and infected organisms

I, III, IV

• What is the pioneer species of a pond?A. PhytoplanktonB. MossesC. Water hyacinthD. Shrubs

A

A

I, III

R, S

C

C

• Which of the following is not an adaption of the tapeworm, a type of parasite in the human intestine?

A. Has thick external cuticleB. Presence of hook and suckerC. Ultra-sensitive nervous systemD. Performs anaerobic respiration

Fungi

• Which of the following pairs of organisms shows commensalism?

A. Algae and fungiB. Fleas and catC. Clownfish and sea anemonesD. Barnacles and crabs

D

D

COMMENSALISM

Phylum, class, order, family, genus

Phylum, class, order, family, genus

C

C

• A disease-carrying animal is also known as a

A. Causative agentB. PathogenC. VectorD. Germ

Nitrobacter sp.

Bacteria R

B

B

• Which of the following cannot be determined by quadrat sampling?

A. Species densityB. Species toleranceC. Species frequencyD. Percentage of species covered

K : Nitrogen fixationL : Nitrification

I, II

• Which sequence correctly represents the action of nitrifying bacteria?

A. Ammonium→ Nitrites → NitratesB. Ammonium → Nitrates → NitritesC. Nitrates → Nitrites → AmmoniumD. Nitrites → Ammonium → Nitrates

A

A

• Which of the following diseases is caused by a virus?

A. measlesB. DengueC. MalariaD. thyphoid

A

A

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