Multiple choice

Which of the following are not found in hydra?

  1. Epitheliomuscular cells

  2. Cnidocytes

  3. Choanocytes

  4. Nerve cells

  5. -

Reveal answer Fill a bubble to check yourself
C Correct answer
Explanation

These are flagellated cells with a collar of protoplasm at the base of the flagellum, numbers of which line the internal chambers of sponges. These are not found in hydra.