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What is the peculiarity of "biradially s...

What is the peculiarity of "biradially symmetrical"?

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The symmetry in which the animals have two planes of symmetry, longitudinal and sagittal axis and longitudinal and transverse axis is biradial symmetry. e.g. Ctenophores.
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Knowledge Check

  • Which of the following is bilaterally symmetrical in larval stages and radially symmetrical in adult?

    A
    Molluscs
    B
    Echinoderms
    C
    Arthropods
    D
    Annelids

  • Assertion: In planaria, the plane of division runs along the longitudinal axis of the individual. Reason: They are bilaterally symmetrical.

    A
    Assertion is true, reason is false.
    B
    Assertion is false, reason is true.
    C
    Both assertion and reason are true.
    D
    Both assertion and reason are false.

  • Biradial symmetry is seen in:

    A
    Star fish
    B
    Comb jelly fish
    C
    Sea anemone
    D
    Sponge

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