WAEC Biology Past Questions & Answers - Page 144

716.

The following organisms are plant pests except

A.

birds

B.

nematodes

C.

bacteria

D.

rodents

Correct answer is C

No explanation has been provided for this answer.

717.

Ascaris lumbricoides is a parasitic

A.

flat worm

B.

round worm

C.

arthropod

D.

elastic worm

Correct answer is B

No explanation has been provided for this answer.

718.

Rhizobium, which lives in the root nodules of leguminous plants is an example of the association known as

A.

commensalism

B.

epiphytism

C.

mutualism

D.

saprophytism

Correct answer is C

No explanation has been provided for this answer.

719.

The main reason for immunizing children is to

A.

destroy pathogens in their bodies

B.

increase the production of white blood cells

C.

stimulate the production of antibodies

D.

simulate the production of antigens

Correct answer is C

No explanation has been provided for this answer.

720.

A pyramid of numbers is constructed by

A.

comparing living and non-living things

B.

measuring productivity

C.

conducting census

D.

labelling the living organisms

Correct answer is C

No explanation has been provided for this answer.