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Development of Endosperm

Regarding the...

Question

Regarding the assertion and reason, select the right option.

Assertion (A): Endosperm development precedes embryo development.

Reason(R): Endosperm provides assured nutrition to the developing embryo.

A

Both A and R are true and R explains A

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B

Both A and R are true and R does not explain A

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C

A is true and R is false

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D

Both A and R are false

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Solution

The correct option is A
Both A and R are true and R explains A

A developing embryo requires constant supply of nutrition, this is the reason why most zygotes divide only after a certain amount of endosperm is formed.

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Q. Assertion (A): Endosperm development precedes embryo development.
Reason(R): During the endosperm development, initially the PEN undergoes successive nuclear divisions to give rise to free nuclei.

Q. Assertion :In angiosperms, endosperm development precedes embryo development. Reason: Double fertilisation ensures that the nutritive tissue is formed before the zygote starts cleaving so that the energy spent on the formation of endosperm does not get wasted.

Q. Assertion :Trapaceae and orchidaceae produces a well developed endosperm Reason: Endosperm is in triploid state and it is a nutritive tissue for the development of embryo.

Q. Endosperm development precedes embryo development because_____________.

Q. Why does endosperm development precedes embryo development?

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