WAEC Past Questions and Answers - Page 3999

19,991.

Ultrafiltration process at the Bowman’s capsule is facilitated by

A.

the volume of water in the blood

B.

the high concentration of urea in the blood of the Bowman’s capsule

C.

the differential blood pressure between the glomerulus and the Bowman’s capsule

D.

the differential blood volume between the glomerulus and the Bowman’s capsule

E.

heavy weight of the urea, water, glucose and amino acids in the Bowman’s capsule

Correct answer is C

No explanation has been provided for this answer.

19,992.

Density, mortality rate, and birth rate are the factors that affect

A.

population

B.

dominance

C.

cover

D.

habitat

E.

abiotic community

Correct answer is A

No explanation has been provided for this answer.

19,993.

Which of the following ecological factors causes food shortage?

A.

Low reproduction rate

B.

Emigration

C.

Drought

D.

Topography

E.

wind direction

Correct answer is C

No explanation has been provided for this answer.

19,994.

The following structures are adaptations for water conservation except

A.

sunken stomata

B.

scales in animals

C.

lenticels in stems

D.

spines in plants

E.

thick leaves

Correct answer is C

No explanation has been provided for this answer.

19,995.

The pair of genes expressed in a heterozygous individual is described as

A.

allele

B.

chromatid

C.

dominant gene

D.

centrosome

E.

chromomere

Correct answer is C

No explanation has been provided for this answer.