BIOLOGY
JAMB 2017 - Question 40
Biology 2017 JAMB Past Questions - Question 40: The most efficient respiratory structure used by free living protozan is
Choose the most appropriate option for the gap .
A:
B:
C:
D:
Correct Answer
A
Explanation
Protozoans have large surface area represented by the cell membrane and small volume as represented by the single cell or protoplasm. In unicellular organism, the surface area to volume ratio is high. Thus diffusion process is enough to distribute materials through the body of the organism. Protozoans do not have specialized excretory organ as obtained in multicellular organisms.
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