JAMB Biology 2014 Objective — Question 3

Question 3 of 49 from the Joint Admissions and Matriculation Board (JAMB) Biology 2014 Objective paper, with the correct answer and a full explanation.

Which of the following uses diffusion as the principal method of gaseous exchange?

A. Grasshopper
B. Rat
C. Lizard
D. EarthwormCorrect

Explanation

The earthworm has a large surface area to volume ratio, making diffusion an efficient means of gaseous exchange through its moist skin.

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