JAMB Biology Past Questions & Answers - Page 404

2,016.

If the bark and phloem tissue of a woody shoot are peeled off by ringing, the whole plant will die eventually die because?

A.

water does not reach the leaves

B.

water and salts remained below the ring portion

C.

there is a withdrawal of water from the root by soil

D.

manufactured food does not reach the roots

E.

the roots store too much water

Correct answer is D

No explanation has been provided for this answer.

2,017.

During excretion of urea there is also a corresponding re-absorption of water into the blood. This re-absorption takes place in the

A.

uriniferous tubules

B.

Bowman's capsule

C.

glomerulus

D.

malpighian capsule

E.

renal artery

Correct answer is A

The uriniferous tubules refer to each of the long, fine, convoluted tubules conveying urine from the glomeruli to the renal pelvis in the vertebrate kidney. Water and salts are reabsorbed into the blood along their length.

2,018.

In anaerobic respiration, glucose is converted to one of the following

A.

Carbon dioxide and water

B.

 Carbon dioxide only

C.

Carbon dioxide and alcohol

D.

Alcohol and water

E.

water and acetic acid

Correct answer is C

No explanation has been provided for this answer.

2,019.

The part of the cell solely responsible for respiration is the

A.

nucleus

B.

nucleolus

C.

mitochondria

D.

golgi apparatus

E.

endoplasmic reticulum

Correct answer is C

No explanation has been provided for this answer.

2,020.

A green plant growing in a compost pit is feeding?

A.

holozoically

B.

parasitically

C.

saprophytically

D.

holophytically

E.

 in none of the above ways

Correct answer is C

Compost pit :a mixture of organic residues such as decomposed vegetation, manure, etc, used as a fertilizer.

holophytic: obtaining food after the manner of a green plant by photosynthetic activity

Saprotrophic nutrition or lysotrophic nutrition is a process of chemoheterotrophic extracellular digestion involved in the processing of decayed organic matter.