WAEC Biology Past Questions & Answers - Page 14

66.

which of the follwing pyramids is not used in ecology? pyramid of 

A.

energy

B.

numbers

C.

biomass

D.

organisms

Correct answer is D

No explanation has been provided for this answer.

67.

The diagram below is an illustration of an experiment on sedimentation of soil. Use it to answer this question.

The part labelled IV is 

A.

silt

B.

sand

C.

humus

D.

clay

Correct answer is B

No explanation has been provided for this answer.

68.

The diagram below is an illustration of an experiment on sedimentation of soil. Use it to answer this question.

The organic component of the soil is labelled

A.

I

B.

II

C.

III

D.

IV

Correct answer is A

No explanation has been provided for this answer.

69.

A group of organisms of the same species living in a particular place is known as

A.

colony

B.

ecosystem

C.

Niche

D.

population

Correct answer is D

A population is a group of individuals of the same species interacting within the same space. 

70.

which of the following practices will not maintain soil fertility?

A.

preventing soil erosion

B.

bush fallowing

C.

tendency of becoming waterlogged

D.

porosity and low water retention ability

Correct answer is C

No explanation has been provided for this answer.