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.

3,406.

One distinctive feature in the life history of liverworts is that they exhibit

A.

Alternation of generation

B.

Vegetative reproduction

C.

Asexual reproduction

D.

Sexual reproduction

Correct answer is A

No explanation has been provided for this answer.

3,407.
3,408.

The first four children of a couple were all girls. The probability that the fifth will also be a girl is

A.

1/5

B.

1/4

C.

1/3

D.

1/2

Correct answer is D

No explanation has been provided for this answer.

3,409.

If XN is the dominant allele for normal vision and Xn the recessive allele for colour blindness, a boy with the genotype YXn will be

A.

have normal vision

B.

be colour-blind

C.

be totally blind

D.

be a carrier of colour blindness

Correct answer is D

The boy is a carrier because Xn is the recessive allele for colour blindness.

3,410.

In a population of living things, the parameters of size, height, weight, and colour are examples of

A.

discontinuous variation

B.

continuous variation

C.

physiological variation

D.

non-heritable variation

Correct answer is B

No explanation has been provided for this answer.