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Assertion: Double fertilization is a unique feature of angiosperms.
Reason: One sperm fertilizes the egg cell while the other fertilizes the central cell to form the endosperm.
Both assertion and reason are true, and the reason is the correct explanation of the assertion.
Both assertion and reason are true, but the reason is not the correct explanation of the assertion.
The assertion is true, but the reason is false.
The assertion is false, but the reason is true.
Answers (1)
Double fertilization is a unique feature of angiosperms and is an important aspect of their reproductive strategy. In double fertilization, two sperm cells are delivered to the embryo sac by the pollen tube. One sperm cell fuses with the egg cell to form the zygote, which develops into the embryo, while the other sperm cell fuses with the two polar nuclei in the central cell of the embryo sac to form the triploid endosperm.
The endosperm is an essential tissue that provides nourishment to the developing embryo, and it is unique to angiosperms. In gymnosperms, the megagametophyte is not fertilized by two sperm cells, and instead, the haploid embryo develops directly from the fertilized egg cell without forming an endosperm.
Option 1 is the correct answer.
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