WAEC Past Questions and Answers - Page 3325

16,621.

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.

16,622.

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. 

16,623.

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.

16,624.

The property of clayey soil that prevents it from supporting thick vegetation is its?

A.

composition of chemically weathered granite rocks

B.

inability to retain much water

C.

tendency of becoming waterlogged

D.

porosity and low water retention ability

Correct answer is B

No explanation has been provided for this answer.

16,625.

Diagram J is a protease while diagrams K, L, M, and N are food substances. Study them and answer this question.

After a reaction between protease J and the food substance, the end product would be 

A.

fatty acids

B.

glucose

C.

amino acids

D.

water

Correct answer is C

No explanation has been provided for this answer.