Sunday, August 2, 2009

List adaptive features of flowers to the pollination agents: (a) wind (b) insect (c) birds&bats (d) water.?

Wind) Long stamens with lots of pollen. This is so the stamen sticks out from the petals so it is more susceptible to the wind. The flowers have more pollen than flowers pollinated by other means because it relies on chance that the pollen will land on the stigma of another flower. Also they have large feathery stigmas to catch the pollen grains.





Insects) Some flowers mimic female insects to attract males to come and "copulate with the flower" which results in the insect getting covered in pollen. This insect then leaves and goes to another flower of the same species and thus it gets pollinated. Some flowers produce the smell of rotten flesh to attract flies which when land on the flower pick up pollen. Most flowers have bright petals and nectar which attracts the insects.





Birds and Bats) Bright coloured petals attract birds. Birds don't have a very good sense of smell so flowers don't produce odours to attract the birds. Bats on the otherhand have a great sense of smell and because they travel by night they don't see what the flower looks like, so flowers which produce odours attract bats for pollination





Water) The flowers have large feathery stigmas to catch the pollen grains and produce large amounts of pollen. The flowers are small





For more detail information see this site





http://en.wikipedia.org/wiki/Pollination...

peony

No comments:

Post a Comment