JAMB Biology Past Questions & Answers - Page 168

836.

The stomata of leaves are similar in function to the

A.

pharynx of humans

B.

scales of fish

C.

spiracle of insects

D.

trachea of toads

Correct answer is C

No explanation has been provided for this answer.

837.

In vascular plants, the sieve tubes and companion cells are present in the

A.

cambium

B.

cortex

C.

xylem

D.

phloem

Correct answer is D

No explanation has been provided for this answer.

838.

What is the theoretical probability that a normal male child will be born?

A.

1\2

B.

1\4

C.

1\3

D.

1

E.

2/3

Correct answer is A

No explanation has been provided for this answer.

839.

A circulatory system is very essential in mammals but not in smaller organisms like Amoeba because

A.

Amoeba lives in freshwater

B.

Diffusion is sufficient to transport materials in Amoeba

C.

Amoeba lacks blood containing haemoglobin

D.

Amoeba exibits anaerobic respiration

Correct answer is B

No explanation has been provided for this answer.

840.

i2/1, c0/0, pm3/2, m3/3. The general formula above represent that of

A.

an omnivore

B.

a detritus feeder

C.

a carnivore

D.

a herbivore

Correct answer is D

No explanation has been provided for this answer.