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Germ Layers

Assertion :Ne...

Question

Assertion :Nereis, an aquatic form is dioecius. Reason: Nereis is asexually immature form and Heteronereis is sexually mature form

A

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

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B

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

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C

Assertion is correct but Reason is incorrect

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D

Both Assertion and Reason are incorrect

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Solution

The correct option is A Both Assertion and Reason are correct and Reason is the correct explanation for Assertion
Nereis are osmoconformers. Nereids are dioecious and they discharge their haploid gametes into the water medium, a procedure called bringing forth. Additionally, upon treatment and mitotic divisions of the zygote, Nereids frame a larval stage which is like that of mollusks – i.e. a trochophore hatchling.
So, the correct option is 'Both Assertion and Reason are correct but Reason is not the correct explanation for Assertion'.

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