Page 230 - Primary Six Notes

The main function of the calyx is to protect the young flower

when its in bud stage.

The calyx is usually green, so it carries out photosynthesis

The calyx also has veins and looks like a small leaf

Epicalyx is found below the calyx.

7. Flower stalk

It holds the flower in an upright position for easy pollination

Pollination

Pollination is the transfer of pollen grains from anther to the

stigma this process is necessary if seeds are to be formed

There are two types of pollination

1. Self pollination

2. Cross pollination

Self pollination

This is the transfer of pollen grains from the anther to the stig-

ma of the same flower or another flower on the same plant.

Adaptations of flowers to self pollination

 The anther heads and stigma mature at the same time e.g.

tomato flowers

 The flower remains closed until self pollination has taken

place

 The flower is hermaphrodite i.e. it has both male and female

parts