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Hydra/Obelia is...

Hydra/Obelia is

A

Diploblastic, radially symmetrical and acoelomate

B

Diploblastic, bilaterally symmetrical and acoelomate

C

Triploblastic, radially symmetrical and coelomate

D

Triploblastic, bilaterally symmetrical and coelomate.

Text Solution

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The correct Answer is:
A
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Knowledge Check

  • What is common between Hydra and Obelia ?

    A
    Both show polymorphism
    B
    Both posses a larval stage in their life history
    C
    Both are found in fresh water
    D
    Both have a jelly like mesoglea without any cells

  • Assertion Medusa of Obelia is carnivorous . Reason Digestion is both extracellular and intracellular.

    A
    Both Assertion and Reason are true and Reason is the correct explanation of Assertion
    B
    Both Assertion and Reason are true but Reason is not the correct explanation of Assertion
    C
    Assertion is true, but Reason is False
    D
    Assertion is false, but Reason is true.

  • Choose the correct statement. Hydra and Adamsia both belongs to same class and exhibit only polyp from Planula larva of Obelia is formed from polyp from planula larva is ciliated and formed from zygote through cleavage In most coelenterates fertilisation is external

    A
    Only (a)
    B
    (a) and (b)
    C
    © and (d)
    D
    Only (d)

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