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  4. The fertilization in which male gametes are carried through pollen tube is known as

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Q. The fertilization in which male gametes are carried through pollen tube is known as

Uttarkhand PMTUttarkhand PMT 2008

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.