wind and insect pollination

Question 1

define pollination

Answer 1

the transfer of pollen grains from the anther of the stamen to the sigma of the carpel

Question 2

outline how insect pollination occurs

Answer 2

1) pollinators are attracted by the large, coloured petals and the scent of nectar
2) they use their tongues to reach the nectar at the base of the petal
3) as the pollinator enters the flower the anthers brush against the thorax and legs leaving sticky pollen
4) when the bee enters another flower it brushes the pollen grains against the ripe stigma and cross pollination has taken place

Question 3

explain how wind pollination occurs

Answer 3

1) anthers hang outside the flower so the wind can blow away small, smooth and light pollen
2) the feathery stigmas hang outside the flower and provide large surface areas for catching pollen grains blown in their path

Question 4

compare wind and insect pollination

Answer 4

insect- colorful petals, nectar, scent, anthers and stigma inside the flower, sticky and sculpted pollen, large pollen grains

wind- petals absent or small, no scent or nectar, anthers and stigma outside flower, smooth pollen, smaller grains

Question 5

define cross pollination

Answer 5

pollination between two flowers