JAMB Biology Past Questions & Answers - Page 301

1,501.

A young plant showing yellow leaves is likely NOT to be deficient in? 

A.

calcium

B.

magnesium

C.

potassium

D.

boron

Correct answer is B

Magnesium deficiency appears on older leaves first as they become yellow between the veins and around the edges.

1,502.

The hereditary material in a cell is known as

A.

ADP

B.

CNS

C.

RNA

D.

ATP

E.

DNA

Correct answer is E

No explanation has been provided for this answer.

1,503.

The characters by which an organism is recognized are termed its 

A.

phenotype

B.

genotype

C.

morphology

D.

anatomy

E.

physiology

Correct answer is A

No explanation has been provided for this answer.

1,504.

Irish potato is a 

A.

bulb

B.

tap root

C.

rhizome

D.

root tuber

E.

stem tuber

Correct answer is E

No explanation has been provided for this answer.

1,505.

The gland directly affecting metabolic rate, growth, and development is known as

A.

adrenal land

B.

 thyroid gland

C.

mammary gland

D.

parathyroid gland

Correct answer is B

No explanation has been provided for this answer.