JAMB Biology Past Questions & Answers - Page 25

121.

The movement of Euglena towards the source of light is a?

A.

tropic movement

B.

tactic movement

C.

nastic movement

D.

kinetic movement

Correct answer is B

Taxis (tactic movement): A change in the direction of locomotion in a motile microorganism or cell, made in response to certain types of external stimulus

122.

An adaptation for defense in animals is?

A.

croaking of a male toad

B.

basking in lizard

C.

spines in porcupine fish

D.

huddling together of penguins

Correct answer is C

The porcupine fish has spines on its body. The fish sucks in water and swells up to make the spines stick out. This transforms it from a small mouthful into an uneatable ball of prickly spines. Its flesh also contains a deadly poison as an extra defense.

123.

Evidence of evolution include the following except?

A.

fossil records

B.

comparative anatomy

C.

molecular records

D.

geographical distribution of organisms

Correct answer is D

Some materials present geographical distribution of organisms as an evidence of evolution while some do not.

124.

An animal which is active during the day is known as a

A.

nocturnal animal

B.

diurnal animal

C.

terrestrial animal

D.

homortacmic animal

Correct answer is B

No explanation has been provided for this answer.

125.

Cytokinesis of mitosis is a process that ensures that

A.

each daughter cell gets the necessary organelles

B.

there is distribution of a complete set of genes into each daughter cell

C.

daughter cell inherit new genetic combinations

D.

worn out organelles are excluded from daughter cells

Correct answer is B

No explanation has been provided for this answer.