JAMB Biology Past Questions & Answers - Page 110

546.

In the diagram, a unique characteristic that distinguishes the class of vertebrates represented from other vertebrates is the presence of

A.

two pairs of limbs

B.

scales on the lower legs

C.

a pair of wings

D.

a covering of feathers

Correct answer is D

No explanation has been provided for this answer.

547.

In the diagram, the structure labelled I is sensitive to

A.

light and touch

B.

chemicals only

C.

light only

D.

chemicals and touch

Correct answer is A

No explanation has been provided for this answer.

548.

In the diagram, the maxillary palp is labelled

A.

ii

B.

iv

C.

i

D.

iii

Correct answer is B

The maxillary palp labelled iv: 

- Small antenna-like sensory appendage emerging from the maxilla.

- These palps serve as organs of touch and taste in feeding and in the inspection of potential foods and/or prey.

549.

In the diagram, the type of adaptation shown in the larva is

A.

mimicry

B.

countershading

C.

flash coloration

D.

disruptive coloration

Correct answer is D

No explanation has been provided for this answer.

550.

The economic importance of the larva in the diagram is that it

A.

is eaten by birds

B.

develop into a moth

C.

resembles the plant it lives on

D.

feeds on the leaves of crops

Correct answer is D

No explanation has been provided for this answer.