Jamb Biology Past Questions and Answers

Question 1816:

• JAMB 2014

A circulatory system is very essential in mammals but not in smaller organisms like Amoeba because

A. Amoeba lives in freshwater
B. Diffusion is sufficient to transport materials in Amoeba
C. Amoeba lacks blood containing haemoglobin
D. Amoeba exibits anaerobic respiration

Question 1817:

• JAMB 2014

In vascular plants, the sieve tubes and companion cells are present in the

A. Cambium
B. Cortex
C. Xylem
D. Phloem

Question 1818:

• JAMB 2014

The stomata of leaves are similar in function to the

A. Pharynx of humans
B. Scales of fish
C. Spiracle of insects
D. Trachea of toads

Question 1819:

• JAMB 2014

The use of moist skin for respiration in amphibians is known as

A. Cellular respiration
B. Cutaneous respiration
C. Buccal respiration
D. Pulmonary respiration

Question 1820:

• JAMB 2014

Water in plants is removed as water vapour through the process of

A. Diffusion
B. Osmosis
C. Evaporation
D. Transpiration