WAEC Biology Past Questions & Answers - Page 54

266.

The cell as the basic unit of life consists of 

A.

cell wall and vacuole

B.

nucleus and cell wall

C.

cytoplasm and nucleus

D.

cytoplasm and vacuole

Correct answer is C

No explanation has been provided for this answer.

267.

The biological importance of the dance by the worker honeybee is that it___________

A.

acts as a signal for mating

B.

serves as a warning signal

C.

signals the availability of food

D.

serves as a means of identifying members of the caste

Correct answer is C

No explanation has been provided for this answer.

268.

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.

269.

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.

270.

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.