Q.
The events in pollen-pistil interaction are given below
(i) Pollen grain germinates to form pollen tube
(ii) Pollen tube enters the ovule through micropyle
(iii) Pollen grain reaches the stigma
(iv) Pollen tube grows through the tissues of stigma and style and reaches the ovary
The sequential order of their occurence is
Sexual Reproduction in Flowering Plants
Solution: