A: Filiform apparatus guides the pollen tube | vedclass

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(A) The filiform apparatus consists of finger-like projections of the synergid cell wall that extend into the cytoplasm of the synergid.These structur

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Assertion and Reason both are correct and Reason is the correct explanation of Assertion.

Vedclass · Answer

(A) The filiform apparatus consists of finger-like projections of the synergid cell wall that extend into the cytoplasm of the synergid.These structures are located at the micropylar end of the synergids.Their primary function is to guide the entry of the pollen tube into the synergids by secreting chemical substances (chemotropic stimulus).Therefore,both the Assertion and the Reason are correct,and the Reason provides the correct explanation for the Assertion.

$A$: Filiform apparatus guides the pollen tube into the synergids.
$R$: It is a special cellular thickening at the micropylar tip to secrete chemotropic stimulus.

Similar Questions

Mention the viability of pollen grains.

By which process does the tip of the pollen tube rupture within the embryo sac?

What is the function of filiform apparatus?

Which part functions as a landing platform for the pollen grains in flowering plants?

How many of the following statements are true about the figure given below?
i. Germination of pollen grain.
ii. Motile male gametes.
iii. Two male gametes and one female gamete.
iv. Pollen grain without exine.
v. Tube nucleus at the tip of pollen tube.

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$A$: Filiform apparatus guides the pollen tube into the synergids.$R$: It is a special cellular thickening at the micropylar tip to secrete chemotropic stimulus.