Question Detail
Question
How do protozoa primarily achieve respiration?
Correct Answer
Option C is the correct answer.
Detailed Explanation
Under 'Respiration and Excretion', the text states: 'Respiration is generally aerobic and occurs by simple diffusion of oxygen across the cell surface, although some parasitic forms in oxygen-poor environments respire anaerobically.'
Hint
Consider the simple, unicellular nature of protozoa and how gases might exchange with the environment.