Question

explain a sexual reproduction in plants

Answer 1

Hey there!


=>>> Sexual reproduction in any organism has two stages. One is meiosis where the gametes are produced which carries half the number of chromosomes as present in somatic cells. The other process is fertilization where male and female gametes fuse to form the diploid offspring. Plants undergo alternation of generation which means the plant body alternates between gametophyte and sporophyte. Mega and micro gametophytes (female and male gametes respectively) produces a diploid zygote which then undergoes mitotic cell divisions to form multicellular sporophyte. Mature sporophyte then undergoes meiosis producing spores. The mega gametophyte in plants is contained in ovule and micro gametophyte in the pollen grain.
 

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Answer 2

Dear student -

◆ Sexual reproduction in plants -

Sequential order of events of sexual reproduction in plants is -

1. pollination
2. fertilization
3. seed formation
4. dispersion of seeds

1) Pollination -

• Pollination is transfer of pollen grain from anther of a plant to stigma of same/another plant.

2) Fertilization -

• Fusion of male gamete (pollen grain) with female gamete (ovule) to form fertilized egg in the ovary is called fertilization.

3) Seed formation -

• Ovule develops to form a seed while ovary becomes the fruit.

4) Seed dispersal -

• After fertilization, seeds are dispersed to a wide area (usually by wind).

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