ZoologyWhich of the following combinations are correct? OrganismFeatures(a)LoligoUnsegmented body; radula.(b)WuchereriaSexual dimorphism; pseudocoelom(c)AsteriasSpiny body; metanephridia(d)PleurobrachiaBioluminescence; metagenesis

Which of the following combinations are correct?

 OrganismFeatures
(a)LoligoUnsegmented body; radula.
(b)WuchereriaSexual dimorphism; pseudocoelom
(c)AsteriasSpiny body; metanephridia
(d)PleurobrachiaBioluminescence; metagenesis

  1. A

    a and b are correct; c and d are incorrect.

  2. B

    a, b and c are correct; d is incorrect.

  3. C

    a is correct; b, c and d are incorrect.

  4. D

    b and d are correct; a and c are incorrect.

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    Solution:

    OrganismFeatures
    LoligoUnsegmented body; radula.
    WuchereriaSexual dimorphism; pseudocoelom
    AsteriasSpiny body; no excretory structure
    PleurobrachiaBioluminescence

    Metagenesis is observed in phylum Cnidaria but not in Ctenophora.

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