The germination of pollen on stigma is ....... type.
A
In vitro
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B
In vivo
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C
In situ
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D
Ex situ
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Solution
The correct option is B In vivo The germination of pollen grain in stigma occurs in 'in-vivo' conditions. It is called as fertilization. Pollen grains are the male gametes and stigma is the female floral part where the ovule is present. Ovule contains the egg cell.