Multiple choice

Pseudocoel is present in:

  1. Periplaneta

  2. Ascaris

  3. Pheretima

  4. Hydra

  5. Pila
Reveal answer Fill a bubble to check yourself
B Correct answer
Explanation

Pseudocoel is a body cavity not fully lined by mesoderm (partially lined by mesoderm and endoderm). Ascaris (roundworm) is a classic nematode with pseudocoel. Periplaneta has haemocoel, Pheretima has true coelom, Hydra has no body cavity, and Pila (snail) has true coelom.

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