Question

Make a list of any three outbreeding devices that flowering plants have developed and explain how they helpencourage cross pollination

Answer 1

1-Self sterility ::- pollen grain of some bisexual plants are unable to germinateon the stigma of same flower but are easily germinated on stigma of another plant of same species.
Ex :- Maize

2- Dictogamy :- in this Adaptation pollen grain and stigma of same flowers mature at different different time to avoid self pollination.
Ex:- China rose

3- Herkogamy :- In some bisexual flowers physical structure of flower acts as a barrier in self pollination.
Ex - calotropis