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

Gujarat BoardEnglish MediumSTD 11 ScienceBIOLOGYSTD 11 - 4. Animal kingdom1 Mark
MCQ
Mesoglea is
  • A
    A germinal layer present between ectoderm and endoderm
  • ✓
    An undifferentiated layer present between ectoderm and endoderm
  • C
    Another name of mesoderm
  • D
    A spongy layer of skin
✓

Answer

Correct option: B.
An undifferentiated layer present between ectoderm and endoderm
b
In diploblastic animals, developing embryo has only two germinal layers i.e. external ectoderm and intemal endoderm. Mesoderm layer is not present between ectoderm and endoderm but an undifferentiated, jelly like layer is present between them. This undifferentiated layer is called Mesoglea.

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