WAEC Biology Past Questions & Answers - Page 365

1,821.

The part of the alimentary system of a bird where maize is grinded is the

A.

crop

B.

stomach

C.

gizzard

D.

cloaca

E.

rectum

Correct answer is C

No explanation has been provided for this answer.

1,822.

Which of the following adapts the aorta to the high pressure of the blood pumped from the heart?

A.

Thin walls

B.

Fragile membrane

C.

Thick elastic walls

D.

stiff walls

E.

Narrow lumen

Correct answer is C

No explanation has been provided for this answer.

1,823.

Testing for a reducing sugar, the food substance is usually warmed with

A.

sulphuric acid

B.

million's reagent

C.

sudan III

D.

Benedict's solution

Correct answer is D

No explanation has been provided for this answer.

1,824.

Pellagra can be prevented by consuming food rich in

A.

vitamin A

B.

vitamin B

C.

Vitamin D

D.

calcium

E.

iodine

Correct answer is B

Pellagra is due to a lack of the vitamin niacin and/or its precursor tryptophan, an essential amino acid.

Food sources of niacin and/or tryptophan include nutritional yeast, eggs, bran, peanuts, meat, poultry, fish with red meat, cereals (especially fortified cereals), legumes, and seeds.

Niacin, also known as nicotinic acid, is an organic compound and a form of vitamin B₃, an essential human nutrient.

1,825.

During which of the following processes is animal food produced?

A.

Photosynthesis

B.

Respiration

C.

Nutrition

D.

Digestion

E.

Transportation

Correct answer is A

No explanation has been provided for this answer.