WAEC Biology Past Questions & Answers - Page 117

581.

The amount of starch in a germinating seed decreases because the starch is used up

A.

for respiration and to build cells

B.

to build a cellulose cell wall

C.

to develop meristematic tissues

D.

to produce enzymes

Correct answer is A

No explanation has been provided for this answer.

582.

Older parts of plant roots do not normally absorb water because

A.

they lack xylem

B.

they have a small surface area

C.

the phloem is dead

D.

they lack root hairs

Correct answer is D

No explanation has been provided for this answer.

583.

An inferior ovary of a flower is situated

A.

below the floral parts

B.

above the floral parts

C.

at the same level with all the floral parts

D.

at the centre of the floral parts

Correct answer is A

No explanation has been provided for this answer.

584.

The following substances pass into the blood of the foetus from the mother's blood via the placenta except

A.

carbon dioxide

B.

glucose

C.

viruses

D.

antibodies

Correct answer is C

No explanation has been provided for this answer.

585.

The inability of a human to maintain proper balance may be due to a defect in the

A.

cochlea

B.

Eustachian tube

C.

Semi-circular canals

D.

oval window

Correct answer is C

No explanation has been provided for this answer.