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.

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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 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

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

What acts as a mediator in the pollen-pistil interaction?

$A$: Certain proteins of pollen origin identify the compatible stigma.
$R$: Compatibility proteins are located in the ektexine.

What type of growth is observed in the pollen tube?

The entry of the pollen tube into the ovule through the micropyle is known as:

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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.