WAEC Past Questions and Answers - Page 4159

20,791.

Which of the following does not contribute to the biomass in an ecosystem?

A.

Producers

B.

Food chains

C.

Consumers

D.

Micro-organisms

E.

Saprophytes

Correct answer is B

No explanation has been provided for this answer.

20,792.

Which of the following is not classified as a terrestrial habitat?

A.

Forest

B.

Guinea Savannah

C.

Afro Alpine

D.

Littoral zone

E.

Desert

Correct answer is D

No explanation has been provided for this answer.

20,793.

Autotropic nutrition may be defined in terms of food obtained

A.

from other organisms in exchange for some products

B.

by the breakdown of complex substances

C.

by an organism utilizing its own store of energy

D.

by synthesizing simple substances using energy from an external source

E.

in a synthesized form from other living organism

Correct answer is D

No explanation has been provided for this answer.

20,794.

The relationship between a herbivore and the bacteria in its caecum is known as

A.

parasitism

B.

symbiosis

C.

commensalism

D.

saprophytism

E.

predation

Correct answer is B

No explanation has been provided for this answer.

20,795.

In a water culture experiment, a plant showed poor growth and yellowing leaves. These symptoms
were probably due to the absence of

A.

calcium

B.

phosphorus

C.

iron

D.

zinc

E.

copper

Correct answer is C

No explanation has been provided for this answer.