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The tube which grows out of pollen grain to reach the ovary, travels through the:
style
filament
petal
anther
style
After pollination, the pollen grain lands on the stigma of the carpel and germinates to produce a pollen tube. This tube grows downwards through the tissues of the style to reach the ovary for fertilization.
After pollination, the pollen grain lands on the stigma of the carpel and germinates to produce a pollen tube. This tube grows downwards through the tissues of the style to reach the ovary for fertilization.
Think of the style as a long 'tunnel' or 'corridor' that the pollen grain must travel through to deliver its genetic 'package' to the room (ovary) containing the egg.
STigma тЖТ STyle тЖТ STarting fertilization process.
The pollen tube growth is directed by chemotropism, where the tube grows towards the ovule (within the ovary) in response to chemical signals. The style provides the necessary path, nutrients, and moisture for the pollen tube to elongate until it enters the micropyle of the ovule.
The carpel (or pistil) consists of three parts: stigma, style, and ovary.
Pollination is the transfer of pollen from the anther to the stigma.
The pollen tube serves as the vehicle for male gametes to reach the female gametes.
The process ensures double fertilization in angiosperms.
Facilitates protected transfer of gametes
Ensures specific targeting of the egg cell
Angiosperm sexual reproduction
Plant breeding and genetic improvement
Anther: Produces pollen grains (male reproductive part).
Filament: Supports the anther.
Petal: Attracts pollinators.
Style: The hollow or tissue-filled stalk connecting the stigma to the ovary.
A is correct тАФ The pollen tube grows down through the style to reach the ovary.
Remember that the 'carpel' is the female reproductive unit, and its parts are easy to remember in order from top to bottom: Stigma (receptive surface), Style (tube), Ovary (base).
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