When the pollen tube enters through the funiculus or the integument it is called

porogamy

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chalazogamy

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mesogamy

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isogamy

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Solution

The correct option is C mesogamy
Mesogamy is when a pollen tube enters the embryo sac through the funiculus or the integument.

Porogamy is when a pollen tube enters the embryo sac through the micropyle.

Chalazogamy is when a pollen tube enters the embryo sac through the chalaza.

Isogamy is a type of sexual reproduction in which both the gametes are similar in size.

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