WAEC Biology Past Questions & Answers - Page 15

71.

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.

72.

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.

73.

The major source of vitamin A are ?

A.

egg yolk, carrot, and palm oil

B.

mango, pawpaw, and eggs

C.

sorghum, soya bean, and liver

D.

rice, bran, green vegetables, and milk

Correct answer is A

No explanation has been provided for this answer.

74.

An evidence of the occurrence of photosynthesis in an experiment is the?

A.

release of carbon (IV) oxide

B.

release of oxygen

C.

formation of water molecules

D.

formation and release of fructose

Correct answer is B

No explanation has been provided for this answer.

75.

 In which of the following structures is simple sugar produced?

A.

Vacuole

B.

Cytoplasm

C.

Chloroplast

D.

Cell wall

Correct answer is A

No explanation has been provided for this answer.