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STD 11 - 4. Animal kingdom — BIOLOGY STD 11 Science — Question

Rajasthan BoardEnglish MediumSTD 11 ScienceBIOLOGYSTD 11 - 4. Animal kingdom1 Mark
MCQ
In contrast to Annelids, the Platyhelminthes show
  • ✓
    Absence of body cavity
  • B
    Bilateral symmetry
  • C
    Radial symmetry
  • D
    Presence of pseudocoel
✓

Answer

Correct option: A.
Absence of body cavity
a
Platyhelminthes does not have body cavity lined with mesoderm, hence are aceolomate but annelids are schizocoelomate, true coelomate, body cavity is lined by mesoderm.

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