Question

Assertion :In pteridophytes, zygote produces a multicellular sporophyte. Reason: Sporophyte is the dominant phase in life cycle of pteridophytes.

• A. Both Assertion and Reason are correct and Reason is the correct explanation for Assertion
• B. Both Assertion and Reason are correct but Reason is not the correct explanation for Assertion
• C. Assertion is correct but Reason is incorrect
• D. Both Assertion and Reason are incorrect

Answer 1

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

In pteridophytes, gametophytes bear, male and female sex organs called antheridia and archegonia, respectively. Water is required for transfer of antherozoids -the male gametes are released from the antheridia to the mouth of archegonium. Fusion of male gamete with the egg present in the archegonium results in the formation of zygote. Zygote thereafter produces a multicellular we 11-differentiated sporophyte which is the dominant phase of the pteridophytes.

So the correct answer is 'B'.