3.3a - Insect pollination

Pollination - Transfer of pollen grains from anther to stigma
Pollen contains male nuclei
Flower needs to attract insects

Cross pollination - pollen goes from one plant to the other

Adaptations to attract insects

Signals
colour petals (insects can see colour)
scents

Value
food (Nectaries/fructose)
pollen as a source of protein

Male and female parts of the plant

Stamen - male part of the plant
Anther (pollen grains)
Filaments - stalk

Carpel - female part
Stigma - where pollen grains fall
Style - connects stigma to ovary
Ovary - contains eggs (ovules)