Question

after pollination the growth of pollen tube on stigma towords ovule is due to the following
a.phototropism
b.geotropism
c.hydrotropism
d.chemotropism​

Answer 1

For fertilization, pollen grains follow chemotropic mechanism where the growth of the pollen tube is towards the ovules. ... whereas phototropism is the growth towards the light, in hydrotropism is towards water and geotropism is towards force of gravity. So, the correct answer is option D.