After pollination, the growth of pollen tube on stigma toward ovule is due to:
Phototropism
Chemotropism
Hydrotropism
Geotropism
After reaching on stigma the pollen grain develops a pollen tube towards ovule because of chemical reactions (chemotropism).
Question 18 The growth of pollen tubes towards ovules is due to (a) hydrotropism (b) chemotropism (c) geotropism (d) phototropism
The movement of a shoot towards light is:
(a) geotropism
(b) hydrotropism
(c) chemotropism
(d) phototropism
Question 10 The movement of the shoot towards light is (a) geotropism (b) hydrotropism (c) chemotropism (d) phototropism