3.3a insect pollination

• Pollen has got a structure which contains a male nuclei.
• if pollen is transferred from one plant to the other it is known as cross pollination
• Flowers attract insects through coloured petals, scent, and nectaries/fructose
• Many insects also use pollen itself as a form of protein
• The pollen grains are produced in the anther.
• The stamen is the male part of a flower which is composed of the anther. The anther and the filament form the stamen.
• The filament is a stock which holds the anther
• There are three female parts in a flower:

stigma, onto which the pollen grain falls
style, which connects the stigma to the ovary,
and ovary, where we would find the ovules (eggs)

• The entire female structure in the plant is known as the carpel while the stamen is the male part.