Pollination in Plants

POLLINATION

It is the tranfer of pollen grain from anther to stigma. 

Contrivances of self pollination :-

• Bisexuality 👉 Chances of self pollination ia more. e.g. Wheat, Rice, Potato. 
• Homogamy 👉 When male and female part mature at same time e.g. Commelina. 
• Cleistogamy 👉 these are enclosed flowers i.e. they never open. e.g. Oxalis, viola, Arachis hypogea, balsam.
• Bud Pollination 👉 pollinated at bud stage i.e. before opening .e. g. Wheat, rice, pea. 
• Fail safe mechanism 👉 In potato, style bends and stigma touching the anther to recieve pollen grains from it. 
•       In Sunflower 🌻, stigma curls back inwards to recieve pollen grain from underlying anther. 

    In Mirabilis, stamen bend and dust pollen grains on the stigma.