Which of the protozoa has a striking resemblance to collar cells in sponges_____________?
Correct answer: B. Choanflagellates
- A. Zooflagellates
- B. Choanflagellates
- C. Trypanosomoa
- D. Trichonymphas
Explanation
Choanoflagellates possess a collar of microvilli surrounding a flagellum, closely resembling the choanocytes, or collar cells, of sponges. Trypanosoma and Trichonympha have flagella but lack this distinctive collar arrangement, so students may select a by treating all flagellated protozoa as similar.
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