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NTA Abhyas NEET2020BotanyAnimal KingdomPractice

Most of the asymmetrical acoelomates belong to phylum?

Options

  1. APorifera
  2. BCtenophora
  3. CCnidaria
  4. DEchinodermata

Correct answer

A. Porifera

Step-by-step solution

Types of animals on the basis of symmetry - 1 . Asymmetrical - No particular symmetry. Examples : Most of sponges. 2 . Radially symmetrical - When any plane passing through the central axis of the body divides the organism in 2 equal halves. Examples : Few sponges, coelenterates, ctenophores, and adult echinodermates. 3 . Bilaterally symmetrical - Body of organism is divisible into 2 equal halves only in one plane. Examples : Platyhelminthes, aschelminthes, annelids, arthropods, molluscs, echinodermates and chordat

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