Double fertilization is an exclusive feature found in flowering plants. Based on the course of the growth of pollen tube and entry into the ovule which one of the following is known as misogamy?
A
Entry of pollen tube through the micropyle into the ovule
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B
Entry of pollen tube through the plancenta and the funiculus
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C
Entry of pollen tube through the integuments
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D
Entry of pollen tube through the funiculus and chalaza into the embryo sac from the egg apparatus end
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Solution
The correct option is C Entry of pollen tube through the integuments In mesogamy, the pollen tube enters through the integuments of the ovule. It is seen in Cucurbita plants. Entry of pollen tube through the micropyle into the ovule is porogamy. Entry of pollen tube through the funiculus and chalaza into the embryo sac from the egg apparatus end is chalazogamy. Thus, the correct answer is option (C).