JAMB Biology Past Questions & Answers - Page 229

1,141.

The spots and stripes of the leopard and tiger are examples of

A.

cryptic colouration

B.

warning colouration

C.

disruptive colouration

D.

counter shading

Correct answer is C

No explanation has been provided for this answer.

1,142.

Rodents gnaw on food with their

A.

molar teeth

B.

strong jaws

C.

flat-ridged teeth

D.

chisel-like front teeth

Correct answer is D

No explanation has been provided for this answer.

1,143.

Plants survive hot dry conditions by

A.

storing water in large parenchyma cells

B.

producing numerous leaves

C.

having numerous stomata

D.

having evergreen leaves

Correct answer is A

No explanation has been provided for this answer.

1,144.

Which of the following is an example of intraspecific competition?

A.

a lizard and an anteater chasing an insect

B.

a worker termite and a soldier in a limited

C.

a hawk and an eagle targeting the same chicken

D.

yam and potato shots growing out through the same window

Correct answer is D

No explanation has been provided for this answer.

1,145.

Sex-linked genes are located on

A.

Y - chromosomes

B.

X - and Y - chromosomes

C.

homologous chromosome

D.

X - chromosome

Correct answer is D

Characters determined by a gene located on only the X-chromosome are said to be sex-linked.