Bird of Paradise flower is

Express in one word only Bird pollinated flowers.

There are some lotus flowers in a pond. Some birds in flight thought of resting on them. When each bird sat on a flower, one bird had no seat. When a pair of birds sat on each flower, one flower had no bird. How many flowers? How many birds?

Name the type of association: Humming birds and host flowering plants

What are the different adaptations shown by bird pollinated flowers?

Name any one bird-pollinated flower and mention one most important characteristic of such flower .