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NTA Abhyas NEET2020BotanyAnimal KingdomPractice

Ascaris is characterized by

Options

  1. AAbsence of true coelom but presence of metamerism
  2. BPresence of neither true coelom nor metamerism
  3. CPresence of true coelom and metamerism
  4. DPresence of true coelom but the absence of metamerism

Correct answer

B. Presence of neither true coelom nor metamerism

Step-by-step solution

Body of Ascaris is elongate, cylindrical gradually tapering at both ends. There is no metameric segmentation. In Ascaris, between the body wall and visceral organs is a spacious fluid-filled cavity. They belong to phylum Aschelminthes that have pseudocoelom as there body cavity. Segmentation, also called metamerism, or metameric segmentation, in zoology, the condition of being constructed of a linear series of repeating parts, each being a metamere (body segment, or somite) and each being formed in sequence in the

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