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Length of pollen tube depends on the distance between [NCERT Exemplar] (a) pollen grain and upper surface of stigma. (b) pollen grain on upper surface of stigma and ovule. (c) pollen grain in anther and upper surface of stigma. (d) upper surface of stigma and lower part of style.

Length of pollen tube depends on the distance between [NCERT Exemplar]
(a) pollen grain and upper surface of stigma.
(b) pollen grain on upper surface of stigma and ovule.
(c) pollen grain in anther and upper surface of stigma.
(d) upper surface of stigma and lower part of style.

Grade:12th pass

1 Answers

Pawan Prajapati
askIITians Faculty 60796 Points
one year ago
(b) Length of pollen tube depends on the distance between pollen grain on upper surface of stigma and ovule. A pollen grain falls on the stigma of the carpel, bursts open and develops a pollen tube downwards through the style towards the ovule in the ovary.

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