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Question

Which of the following phylum lacks the ability of regeneration?

A
Protozoa
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B
Porifera
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C
Coelenterata
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D
Nemathelminthes
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Solution

The correct option is D Nemathelminthes
  • Nemathelminthes is a phylum of unsegmented, triploblastic, pseudocoelomic, cylindrical or thread-like worms which are covered by a body wall having cuticle and epidermis. They are commonly called threadworm or roundworm.
  • The members of the phylum Nemathelminthes lacks the ability of regeneration because they do not have stem cells required for regeneration.
  • So, the correct answer is 'Nemathelminthes'.

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