In which of the following modes of entry, the pollen tube enters the ovule through the side of the integument nearest to the placenta, curves round the channel of the micropyle and reaches the embryo sac through the nucellus ?
A. Porogamy
B. Basigamy
C. Acrogamy
D. Mesogamy
Answer: Option D
This Question Belongs to Biology GK Chapter Wise >> Plant Anatomy And Physiology
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