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.

4,246.

The maize grain is regarded as a fruit and not a seed because

A.

It is covered by a sheath of leaves

B.

The testa and fruit wall fuse after fertilization

C.

It has both endosperm and cotyledon

D.

It has coleorhiza and coleoptile

E.

The pericarp and seed coat are separated

Correct answer is B

No explanation has been provided for this answer.

4,247.

The blood vessel which carries digested food from the small intestine to the liver is the

A.

Renal vain

B.

 Renal artery

C.

Hepatic artery

D.

Hepatic portal vein

E.

Coelic artery

Correct answer is D

No explanation has been provided for this answer.

4,248.

The hepatic portal vein is characterized by

A.

 Beginning and ending with capillaries

B.

Connecting the liver and the kidney

C.

Carrying deoxygenated blood

D.

Ending with large capillaries

E.

Having no capillaries

Correct answer is A

No explanation has been provided for this answer.

4,249.

The digestive enzyme that coagulates proteins in milk is

A.

Ptyalin

B.

Pepsin

C.

Renin

D.

Trypsin

E.

Amylase

Correct answer is C

No explanation has been provided for this answer.

4,250.

If you cross breed a tall variety (Tt) of maize with a short variety (tt), the ratio of tall to short plants in the offspring will be

A.

2:1

B.

1:2

C.

1:1

D.

1:3

E.

3:1

Correct answer is C

No explanation has been provided for this answer.