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NTA Abhyas NEET2020BotanyAnimal KingdomPractice

An undifferentiated layer, mesoglea, is present in

Options

  1. AFasciola
  2. BAncylostoma
  3. CHirudinaria
  4. DAdamsia

Correct answer

D. Adamsia

Step-by-step solution

Animals in which the cells are arranged in two embryonic layers, external ectoderm, and internal endoderm, are called diploblastic animals, e.g., coelenterates. An undifferentiated layer, mesoglea, is present in between the ectoderm and the endoderm.

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