JAMB Biology Past Questions & Answers - Page 155

771.

The function of the red head in male Agama lizards is to

A.

conceal and camouflage the animal from predators

B.

scare other males from the territory

C.

attract female lizards for mating purposes

D.

warn predators of the distastefulness of the animal

Correct answer is C

No explanation has been provided for this answer.

772.

If both parents are heterozygous for a trait, the probability that an offspring will be recessive for that trait is?

A.

½

B.

¾

C.

¼

D.

1

Correct answer is C

The expected genotype ratio when two heterozygotes are crossed is 1 (homozygous dominant) : 2 (heterozygous) : 1 (homozygous recessive). 

773.

All living organisms are constantly involved in a struggle for existence. This was proposed by

A.

Morgan

B.

Darwin

C.

Lamarck

D.

Wallace

Correct answer is B

No explanation has been provided for this answer.

774.

An example of a poikilothermic organism is a

A.

Lizard

B.

Cockroach

C.

rabbit

D.

bird

Correct answer is A

No explanation has been provided for this answer.

775.

The stream-lined shape of fishes is an adaptation for

A.

Securing mates

B.

easy movement

C.

obtaining food

D.

defence and attack

Correct answer is B

No explanation has been provided for this answer.