Assertion :In some species of asteraceae and poaceae seeds are formed without fertilization. Reason: Formation of fruit without fertilization is called parthenocarpy.

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

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

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Assertion is correct but Reason is incorrect.

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Both Assertion and Reason are incorrect.

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Solution

The correct option is B Both Assertion and Reason are correct but Reason is not the correct explanation for Assertion.
Formation of seeds without fertilization is called as apomixis. It leads to clonal reproduction in which all offsprings are by and large genetically identical to the parent.
The egg contains a full complement of genes and does not need to fuse with a sperm to produce a zygote.
Apomixis provides for the perpetuation of traits favorable to individuals' survival but eliminates the longer-term evolutionary advantage of biparental inheritance.
In Asteraceae, various genera and individual species of the order asterales are known to reproduce by apomixis (the setting of seeds without fertilization), either completely or in addition to normal sexual means.
In Poaceae, about 35 genera produce seeds without fertilization. On the other hand, parthenocarpy is the development of fruits without fertilization. The fruit resembles a normally produced fruit but is seedless, e.g., pineapple, banana, cucumber, grape, orange, grapefruit, etc.
So, the correct answer is 'Both Assertion and Reason are correct but Reason is not the correct explanation for Assertion'

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Q. Assertion :In some species of asteraceae and poaceae, seeds are formed without fertilization. Reason: Formation of fruit without fertilization is called parthenocarpy.

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