JAMB Biology Past Questions & Answers - Page 91

451.

Given the equation: 6CO2 + 6H2O → C6H12O6 + 6O2{Under sunlight & Chlorophyll) The process represented by the above equation is?

A.

proteinsynthesis

B.

respiration

C.

photosynthesis

D.

transpiration

E.

translocation

Correct answer is C

No explanation has been provided for this answer.

452.

Given the equation: 6CO2 + 6H2O → C6H12O6 + 6O2 {Under sunlight & Chlorophyll) The oxygen given off during the above process is derived from

A.

sunlight

B.

chlorophyll

C.

carbon dioxide

D.

atmosphere

E.

water

Correct answer is E

No explanation has been provided for this answer.

453.

Chewing the cud is an adaptation peculiar to

A.

Herbivores

B.

Omnivores

C.

Rodents

D.

Ruminants

Correct answer is D

Cud chewing is also necessary because the foods ruminant animals eat are difficult to digest and it takes extra effort to get all of the nutrients from the food.

Other examples of ruminant animals include deer, camels, buffalo, goats, sheep, and giraffes.

The main difference between ruminant and non-ruminant animals is that ruminant animals are herbivores whereas non-ruminant animals are omnivores or carnivores.

Thus, ruminant animals have a complex rumen to digest plant material while non-ruminant animals have a simple stomach since their food is easy to digest.

Non-ruminant animals are animals with a single-compartment stomach, such as swine, poultry, horses, dogs, cats, and humans.

454.

The natural process that produces adaptive evolutionary changes is

A.

Mutation

B.

Gene flow

C.

Genetic drift

D.

Natural selection

Correct answer is D

No explanation has been provided for this answer.

455.

The type of joint between adjacent bones in the part labelled II is the

A.

hinge joint

B.

ball and socket joint

C.

suture joint

D.

sliding joint

Correct answer is D

No explanation has been provided for this answer.