Question

What are the different adaptations shown by bird-pollinated flowers?

Answer 1

Ornithophilous plants shows the following adaptations:

1. Flowers are usually brightly coloured, large, and showy.
2. They secrete profuse, dilute nectar.
3. Pollen grains are sticky and spiny.
4. Flowers are generally without fragrance, as birds have a poor sense of smell.