Sexual Reproduction In Flowering Plant Question 9
Question: Read the assertion and reason carefully:
Angiosperms form endosperm after fertilization and it is triploid. Reason : In gymnosperms, endosperm is formed before fertilization and is diploid.
Options:
A) If both the assertion and the reason are true and the reason is a correct explanation of the assertion
B) If both the assertion and reason are true but the reason is not a correct explanation of the assertion
C) If the assertion is true but the reason is false
D) If the assertion is false but reason is true
Show Answer
Answer:
Correct Answer: D
Solution:
In angiosperms, the nucleus of the second male gamete fuses with the two haploid polar nuclei to form a triploid primary endosperm nucleus.
In gymnosperms the female gametophyte differentiates before fertilization and is haploid.
Therefore, endosperm, which is also a part of the female gametophyte, remains haploid in gymnosperms.
BETA
