When the pollen tube enters the ovule through the integuments, the phenomenon is known as.

Isogamy

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Porogamy

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Mesogamy

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Chalazogamy

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Solution

The correct option is C Mesogamy
Isogamy- it is a type of sexual reproduction and in here gametes are of the same form and size so, indistinguishable from each other.
Porogamy-the pollen tube enters the ovule through the micropyle.
Mesogamy- when the pollen tube enters the ovule through the integuments.
Chalazogamy-when pollen tube enters the embryo sac through the chalaza.
Hence option (C) is correct.

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