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Assertion : Pollen mother cells (PMCs) a...

Assertion : Pollen mother cells (PMCs) are the first male gametophytic cells.
Reason : Each PMC gives rise to two pollens.
(a) Both statements are right
(b) Both statements are wrong.
(c) Statement I is right and statement II is wrong
(d) Statement I is wrong and statement ll is right

A

Both statements are right

B

Both statements are wrong.

C

Statement I is right and statement II is wrong

D

Statement I is wrong and statement ll is right

Text Solution

AI Generated Solution

The correct Answer is:
To solve the question, we need to analyze the assertion and reason provided: ### Assertion: **Pollen mother cells (PMCs) are the first male gametophytic cells.** ### Reason: **Each PMC gives rise to two pollens.** ### Step-by-Step Solution: 1. **Understanding Pollen Mother Cells (PMCs):** - PMCs are also known as microspore mother cells. - They are diploid cells (2n) that arise from primary sporogenous cells. - PMCs undergo meiosis to produce microspores. **Hint:** PMCs are not gametophytic; they are sporophytic cells. 2. **Meiosis in PMCs:** - During meiosis, each PMC divides to form four haploid microspores (pollen grains). - This process is known as microsporogenesis. **Hint:** Remember that meiosis results in four cells, not two. 3. **Analyzing the Assertion:** - The assertion states that PMCs are the first male gametophytic cells. This is incorrect because PMCs are sporophytic cells, not gametophytic. **Hint:** Identify the difference between sporophytic and gametophytic stages. 4. **Analyzing the Reason:** - The reason states that each PMC gives rise to two pollens. This is also incorrect, as each PMC gives rise to four pollen grains. **Hint:** Recall the outcome of meiosis in PMCs. 5. **Conclusion:** - Both the assertion and the reason are incorrect. Therefore, the correct answer is: - **(b) Both statements are wrong.** ### Final Answer: (b) Both statements are wrong.
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