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Q.

Entry of the pollen tube through the micropyle is 
 

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a

mesogamy
 

b

porogamy

c

chalazogamy
 

d

pseudogamy
 

answer is D.

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Detailed Solution

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Concept: Porogamy is a condition in which the pollen tube reaches the ovule through the micropyle in most plants. Chalazogamy is the entry through the chalaza, while mesogamy is the entry through the integuments or funiculus.
Hence, option D is the correct answer.

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