Sunday 3 April 2011

3.3b

3.3b Describe the structures of a wind-pollinated flower and explain how it is adapted for pollination

Wind-pollinated flower
Once again, pollen needs to be transferred from the anther to stigma, but this time by wind (air).

Adaptations:
- Pollen grains are lightweight with some kind of wing features so that they can move throug the air more efficiently.
- Anthers will be exposed to the wind.
- Stigma has a large surface area, featherlike structure to catch the pollen grains as they pass through the air
- The petals have no colour in petals, no scent and no nectarine because there is no need to attract insects. This is a waste of energy for grass.

1 comment:

  1. Excellent notes for 3.3a and 3.3b you will be able to get some real images in the lab

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