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  • Diversity In Living Organisms - III
  • Which of the following phyla have true body cavity?
Multiple choice

Which of the following phyla have true body cavity?

  1. Porifera

  2. Coelenterata

  3. Nematoda

  4. Annelida

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

Annelida are the first phylum to exhibit a true coelom (a fluid-filled cavity completely lined by mesoderm). Porifera, Coelenterata, and Nematoda are acoelomate or pseudocoelomate.

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