WAEC Past Questions and Answers - Page 4058

20,286.

The process by which plants manufacture food from carbondioxide and water using energy from the sun is
termed

A.

chemosynthesis

B.

photosynthesis

C.

autotrophism

D.

heterotrophism

E.

transpiration

Correct answer is B

No explanation has been provided for this answer.

20,287.

The two important physical processes involved in the absorption and transport of materials in plants are

A.

diffusion and plasmolysis

B.

cohesion and adhesion

C.

flaccidity and turgidity

D.

osmosis and diffusion

E.

plasmolysis and capillarity

Correct answer is D

No explanation has been provided for this answer.

20,288.

The scientist who discovered the cell while examining a thin slice of cork under the microscope was

A.

Robert Hooke

B.

Anton van Leeuwenhoek

C.

Matthias Schleiden

D.

Theodor Schwann

E.

Alexander Fleming

Correct answer is A

No explanation has been provided for this answer.

20,289.

All animals are dependent on green plants because plants

A.

shelter them from the excessive heat of the sun

B.

protect them from enemies

C.

are used to build houses and furniture

D.

beautify their surroundings

E.

manufacture food for animals

Correct answer is E

No explanation has been provided for this answer.

20,290.

Which of the following statements is not associated with the theory of natural selection?

A.

There is a struggle for existence

B.

There is competition among the offspring

C.

The weaker offspring are eliminated

D.

Food and other needs are abundant

E.

Nature selects those that survive to reproduce their kind

Correct answer is D

No explanation has been provided for this answer.