A) pollen grain
B) pollen tube
C) water
D) male gamete
Correct Answer: B
Solution :
Micropyle is a minute opening present at one end of the seed coat. It is very helpful in seed germination as sufficient water enters the seed through microphyle. During fertilization, micropyle of the ovule provides a passage for the entry of pollen tube, but the pollen tube may enter the ovule by passing through chalaza or integuments.
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