Multiple choice

In which of the following organisms are organs not associated to form functional systems, with each system concerned with a specific physiological function?

  1. Annelids

  2. Arthropods

  3. Molluscs

  4. Porifera

  5. Echinoderms

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

This is the correct option. In Porifera, the cells are arranged as loose cell aggregates and organs have not associated to form functional systems.