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.

511.

The yellow and black stripes on the body of wasps is an example of________

A.

mimicry

B.

courtship behaviour

C.

camouflage

D.

warning colouration

Correct answer is D

No explanation has been provided for this answer.

512.

The cross between RrTt and rrtt where R is a gene for red colour and T for tallness will result in______

A.

all the offspring being tall with red fruits

B.

25 % tall with red fruits

C.

50 % tall with red fruits

D.

75 % tall with red fruits

Correct answer is C

No explanation has been provided for this answer.

513.

A man whose blood group is heterozygous B is married to a woman whose blood up is also heterozygous B. 

Which of the following statements is correct about the blood group of their four offspring?

A.

Three of them belong to blood group B

B.

Three of them belong to blood group O

C.

None of them belongs to blood group O

D.

Two of them belong to blood group B

Correct answer is A

No explanation has been provided for this answer.

514.

In a complete dominance monohybrid cross between a pure breeding yellow-flowered plant Y and a pure breeding white-flowered plant y, the result of the first filial generation is _________

A.

50% yellow flowers

B.

75% yellow flowers

C.

all yellow flowers

D.

all white flowers

Correct answer is C

No explanation has been provided for this answer.

515.

Which of the following nucleotides is not found in the DNA molecules?

A.

Adenine

B.

Cytosine

C.

Guanine

D.

Uracil

Correct answer is D

No explanation has been provided for this answer.