Assertion :Isogametes are formed in majority of sexually reproducing organisms. Reason: Morphologically distinct type of gametes are called isogametes.

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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Both Assertion and Reason are incorrect

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Solution

The correct option is D Both Assertion and Reason are incorrect
In some algae, the two gametes are so similar in appearance that they are called homogametes or isogametes. Therefore, it is not possible to differentiate them into male and female gametes. However, in most of sexually reproducing organisms the gametes are of two morphologically dissimilar type, hence they are known as heterogametes or anisogametes.
So, the correct answer is 'Both Assertion and Reason are incorrect'.

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