Biology questions and answers

Biology Questions and Answers

How well do you understand living things and their vital processes? Whether you are preparing for JAMB, WAEC, NECO and Post-UTME, these Biology past questions and answers cover such subjects as the chemistry of life, botany, evolution, genetics, ecology etc to help you know what to expect, improve your speed and confidence and be really prepared for the actual aptitude test.

2,926.

The role of bacteria in the nitrogen cycle includes the following except

A.

fixing atmospheric nitrogen

B.

converting ammonia to nitrites

C.

converting nitrites to nitrates

D.

converting carbohydrates to carbondioxide

E.

causing the decay of dead organisms

Correct answer is D

No explanation has been provided for this answer.

2,927.


Which of the following processes removes CO2 from the atmosphere?

A.

Respiration

B.

Photosynthesis

C.

Transpiration

D.

Excretion

E.

Combustion

Correct answer is B

No explanation has been provided for this answer.

2,928.

In testing for starch in a leaf the function of alcohol is to

A.

kill the cells of the leaf

B.

soften the veins of the leaf

C.

aid iodine to penetrate the cells

D.

be a component of the heating bath

E.

extract the chlorophyll from the leaf

Correct answer is E

No explanation has been provided for this answer.

2,929.

Which of the following is a feature of wind pollinated flowers?

A.

Large and brightly coloured petals

B.

Possession of sweet scent

C.

Presence of nectar

D.

Presence of pollen guides

E.

Smooth, light and numerous pollen grains

Correct answer is E

No explanation has been provided for this answer.

2,930.

If the petals of a flowering plant are removed. Which of the following processes is likely to be affected? 

A.

Transpiration

B.

Pollination

C.

Germination

D.

Photosynthesis

E.

Dispersal

Correct answer is B

No explanation has been provided for this answer.