Assertion :Spongers are asymmetrical. Reason: Any plane that passes through the center does not divide them into equal halves.

Both Assertion and Reason are correct and Reason is the correct explanation for Assertion

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Both Assertion and Reason are correct but Reason is not the correct explanation for Assertion

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Assertion is correct but Reason is incorrect

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Assertion is incorrect and Reason are correct

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Solution

The correct option is A Both Assertion and Reason are correct and Reason is the correct explanation for Assertion
Asymmetrical animals are those animals which can not be divided into equal halves by any plane that passes through the centre.
Only sponges or Poriferans have asymmetrical body plans.
Hence, 'Both Assertion and Reason are correct and Reason is the correct explanation for Assertion'.

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Assertion

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Reason (R) We cannot determine order from balanced chemical equation.

(a) Both assertion and reason are correct and the reason is correct explanation of assertion
(b) Both assertion and reason are correct, but reason does not explain assertion.
(c) Assertion is correct, but reason is incorrect
(d) Both assertion and reason are incorrect
(e) Assertion is incorrect but reason is correct.

ASSERTION: n-Pentane and n-Hexane belong to a homologous series.

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