A) syngamy
B) porogamy
C) siphonogamy
D) chalazogamy
Correct Answer: C
Solution :
Siphonogamy is fusion of male and female gametes in seed plants, because it occurs with the help of pollen tube. Pollen tube can enter the ovule by three methods. [a] Porogamy-through micropyle [b] Chalazogamy-through chalaza [c] Mesogamy-pollen tube penetrates laterally through integuments. Syngamy is a general term used for fusion of male and female gametes.
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