WAEC Biology Past Questions & Answers - Page 123

611.

When a farmer sprays crops with a pesticide, the pesticide becomes

A.

poisonous to all plants

B.

is broken down by soil algae

C.

easily washed down into lakes and rivers

D.

absorbed by bodies of mammals

Correct answer is C

No explanation has been provided for this answer.

612.

Plants found in the aquatic habitat are generally referred to as

A.

epiphytes

B.

halophytes

C.

xerophytes

D.

hydrophytes

Correct answer is D

No explanation has been provided for this answer.

613.

Which of the following defines symbiosis?

A.

parasites feed on dead organisms

B.

both organisms benefit mutually by living together

C.

Saprophytes feed on living organisms

D.

organisms serve as host to parasite

Correct answer is B

No explanation has been provided for this answer.

614.

Which of the following features enables the tapeworm to live successfully in the small intestine of human?

A.

Hook and suckers for strong attachment

B.

Along neck for forming young proglottis

C.

The absence of segmentation and appendages

D.

Possession of flame cells for excretion

Correct answer is A

No explanation has been provided for this answer.