Which of the following statements is incorrec | vedclass

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(A) Statement $A$ is incorrect because double fertilization is a characteristic feature of angiosperms,which occurs after the pollen grain reaches the

Vedclass · Accepted Answer

When pollen grains are shed,they are in a two-celled stage and double fertilization cannot occur.

Vedclass · Answer

(A) Statement $A$ is incorrect because double fertilization is a characteristic feature of angiosperms,which occurs after the pollen grain reaches the stigma and forms a pollen tube. The shedding of pollen in a two-celled stage (vegetative and generative cell) does not prevent double fertilization; rather,the generative cell divides into two male gametes during the growth of the pollen tube. Statement $B$ is correct as the vegetative cell is larger and has abundant food reserves. Statement $C$ is correct as pollen viability varies from minutes to months depending on the species. Statement $D$ is correct as the intine is the inner wall of the pollen grain composed of cellulose and pectin.

Which of the following statements is incorrect?

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Angiospermic plants are characterised by:
$I.$ Double fertilisation
$II.$ Triploid endosperm
$III.$ Diploid endosperm
Choose the correct option from the following regarding the above statements.

Which of the following processes occur simultaneously?
$(i)$ Ovule $\rightarrow$ Seed
$(ii)$ Ovary $\rightarrow$ Fruit
$(iii)$ $MMC$ $\rightarrow$ Megaspore
$(iv)$ $PMC$ $\rightarrow$ Pollen grain

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