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.

3,696.

In spite of the removal of carbondioxide from the atmosphere, its amount remains more or less constant because

A.

it is produced by green plants during photosynthesis

B.

it is produced during respiration of animals

C.

it is absorbed inn ocean water

D.

green plants release it during the day

Correct answer is B

No explanation has been provided for this answer.

3,697.

In a food chain involving a primary producer, a primary consumer as well as a secondary consumer, the sharing of trophic energy is in the form that the

A.

primary consumer has more energy than the primary poducer

B.

secondary consumer takes up all the energy contents of the primary consumer

C.

energy is shared equally between the three groups of organism

D.

secondary consumer gets only a small portion of the energy contained in the primary producer

Correct answer is D

No explanation has been provided for this answer.

3,698.

The depth of illumination in a water body can be measured with a

A.

photometer

B.

secchi disc

C.

hydrometer

D.

anemometer

Correct answer is B

No explanation has been provided for this answer.

3,699.

Germination which results in the cotyledons being brought above ground is called

A.

 hypocotyl

B.

epicotyl

C.

epigeal

D.

hypogeal

E.

plumule

Correct answer is C

No explanation has been provided for this answer.

3,700.

A young plant showing yellow leaves is likely NOT to be deficient in? 

A.

calcium

B.

magnesium

C.

potassium

D.

boron

Correct answer is B

Magnesium deficiency appears on older leaves first as they become yellow between the veins and around the edges.