WAEC Biology Past Questions & Answers - Page 326

1,626.

When gametes from pure breed parents with contrasting features such as tallness and shortness are
involved in a monohybrid cross, the offsprings in the first filial generation are usually

A.

pure breed

B.

heterozygous dominant

C.

homozygous recessive

D.

mutants

E.

co-dominant

Correct answer is B

No explanation has been provided for this answer.

1,627.

Thrombocytes are blood cells responsible for initiating

A.

phagocytosis of bacteria

B.

ribosome synthesis

C.

blood clotting

D.

immunity to certain infectious diseases

E.

removal of carbondioxide from tissues

Correct answer is C

No explanation has been provided for this answer.

1,628.

Water rises most rapidly in

A.

sandy soil

B.

clayey soil

C.

sandy-loam soil

D.

loamy soil

E.

humus soil

Correct answer is A

No explanation has been provided for this answer.

1,629.

The conservation of natural resources can be achieved by the following except

A.

creating national parks

B.

forming conservation societies and agencies

C.

establishing game reserves

D.

deregulating harvesting

E.

Formulating conservation laws

Correct answer is D

No explanation has been provided for this answer.

1,630.

Water in the human body is derived from the following sources except through

A.

drinking water

B.

food substances

C.

cytoplasm of worn-out cells

D.

respiratory activity

E.

skin absorption

Correct answer is E

No explanation has been provided for this answer.