Question

Give the floral adaptations of entomophily.

Answer 1

Floral adaptations for entomophily:

1.  Flowers are large and attractive. When small, they are clustered into an inflorescence (e.g. sunflower).
2.  Flowers have attractive bright colours, with pleasant fragrance and nectar glands.
3. In some plants, additional modifications are made to attract insects. e.g. Corona in passion flower and petalloid bracts in Bougainvillea.
4.  Pollen grains possess spiny or rough outer walls.
5.  Stigma has a rough and sticky surface.
6.  To favour insect pollination, some plants develop special mechanisms e.g. lever mechanism in Salvia, Jasmine, Rose, Bougainvillea.