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Similar Questions

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

Describe pollen-pistil interaction.

Which of the following statements is correct for the pollen tube?

In . . . . . . pollen grains cause allergy.

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

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