Question

length of pollen tube depends on the distance between
(a) pollen grain and upper surface of stigma and ovule
(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​

Answer 1

Answer:

pollen grains on upper surface of stigma and ovule. Pollen grains land on the surface of the stigma. Hence, the pollen tube is formed so that the pollens can reach the ovules present in the ovary.

Explanation:

Correct option is B)

Length of pollen tube depends upon distance of pollen on stigma and ovule because after pollination pollen germinates and form pollen tube that reaches upto ovule in ovary and release male gamete to fuse with female gamete.