Multiple choice

Which of the following is not a characteristic of the members of phylum annelida?

  1. Hydrostatic skeleton

  2. Segmentation

  3. Metanephridia

  4. Pseudocoelom
Reveal answer Fill a bubble to check yourself
D Correct answer
Explanation

Annelids (segmented worms) are coelomate organisms with a true body cavity. They possess a hydrostatic skeleton, segmentation (metamerism), and metanephridia for excretion. Pseudocoelom is a body cavity type found in nematodes, not annelids, making it the correct 'not a characteristic' answer.

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