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How are the non-motile pollen grains carried to the female gamete?

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in Biology – Class 12 by (271k points)
How are the non-motile pollen grains carried to the female gamete?

(a) Insects

(b) Pollen tube

(c) Anther

(d) Stalk

I had been asked this question during an interview.

Question is taken from Organisms topic in division Reproduction in Organisms of Biology – Class 12

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Correct choice is (b) Pollen tube

To explain: Non motile pollen grains are carried to the female gamete via a pollen tube which extends from the stigma, all the way through the style, reaching the ovaries. Wind, water, insects, etc. are just ways of mode of transportation for cross pollination.

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