JAMB Biology Past Questions & Answers - Page 279

1,391.

The dark reaction of photosynthesis involves

A.

fixation of carbon (IV) oxide to give six-carbon sugar

B.

fixation of carbon (IV) oxide with the help of oxygen

C.

use of carbon (IV) oxide to produce glucose using ATP

D.

fixation of carbon (IV) oxide on chlorophyll using hydrogen

Correct answer is C

No explanation has been provided for this answer.

1,392.

After a meal of yam has been digested, the highest concentration of glucose is to be found in the

A.

hepatic artery

B.

pulmonary vein

C.

hepatic portal vein

D.

posterior vena cava

Correct answer is C

No explanation has been provided for this answer.

1,393.

Substance manufactured by the leaves are transported to other parts of the plant through the

A.

phloem

B.

companion cells

C.

sieve tubes

D.

cambium

Correct answer is A

No explanation has been provided for this answer.

1,394.

In the woody stems, gaseous exchange takes place through the

A.

micropyles

B.

stomata

C.

lenticels

D.

vessels

Correct answer is C

No explanation has been provided for this answer.

1,395.

In plant cells, the chloroplast are located

A.

inside the cell wall

B.

outside the protoplasm

C.

within the vacuole

D.

within the cytoplasm

Correct answer is D

No explanation has been provided for this answer.