JAMB Biology Past Questions & Answers - Page 351

1,751.

The path taken by glucose from the ileum to the heart is

A.

Ileum →hepatic portal vein →hepatic artery → vena cava → heart

B.

Ileum → hepatic portal artery →hepatic artery → vena cava → heart

C.

Ileum → hepatic portal vein → vena cava → heart

D.

Ileum → hepatic vein → vena cava → heart

E.

Ileum → hepatic portal vein → hepatic vein → vena cava → heart

Correct answer is E

No explanation has been provided for this answer.

1,752.

Which of the following can bring about the greatest increase in the rate of transpiration?

A.

Increased humidity

B.

Reduced temperature

C.

Reduced wind speed

D.

Reduced humidity

Correct answer is D

Relative humidity: As the relative humidity of the air surrounding the plant rises the transpiration rate falls. It is easier for water to evaporate into dryer air than into more saturated air.

1,753.

What is the genetic ratio of the F2 generation if members of F generation are allowed to self-pollinate?

A.

1 tall : 3 short

B.

3 tall : 1 short

C.

1 tall : 1 short

D.

4 short : 0 tall

E.

4 tall : 0 short

Correct answer is B

No explanation has been provided for this answer.

1,754.

Urea is produced in the 

A.

Liver

B.

Bladder

C.

Spleen

D.

Kidneys

E.

Gall bladder

Correct answer is A

No explanation has been provided for this answer.

1,755.

In the living cells, insufficient oxygen may cause a breakdown of glucose into?

A.

fatty acids

B.

lactic acids

C.

glycogen

D.

carbon dioxide

Correct answer is B

No explanation has been provided for this answer.