WELCOME

DO YOU THINK IS THERE ANY RELATION BETWEEN FLOWER AND FRUIT?

LET’S SEE HOW FLOWERS BECOME FRUIT

POLLINATION

Parts of flower

Pollination The transfer of pollen grains from the stamen to stigma is called pollination. There are 2 types of pollination Self-pollination Cross-pollination

Self pollination When the pollen lands on the stigma of the same flower it is called self-pollination.

Cross pollination When the pollen of a flower lands on the stigma of another flower of the same plant, or that of a different plant of the same kind, it is called cross-pollination.

AGENTS OF POLLINATION

Bee Bees visit mostly nectar producing flowers. Pollen stick to the back of bee.

Butterfly Butterfly has good vision and less sense of smell. Butterfly visit flowers in cluster.

Bird Birds have good sense of colour. Birds don’t have good sense of odour. Therefore bird-pollinated flowers have less odour and have bright colour.

Ants Ants are wingless and crawl into each flower. Ants are not much responsible for pollination.

Water Pollens can float on water’s surface. The pollen is transferred to the stigma by water.

Wind Wind pollinating flowers have well exposed anthers and stigma. Pollen is transferred to the stigma by wind.

Bat Over 500 plant species rely on bats to pollinate their flowers, including species of mango, banana, cocoa, guava. Plants pollinated by bats often have pale nocturnal flowers.

Bat pollinating banana

Bees pollinating almond Almonds are only pollinated by bees.

True or false When the pollen lands on the stigma of the another flower it is called self-pollination. Ans: False When the pollen of a flower lands on the stigma of another flower of the same plant, or that of a different plant of the same kind, it is called cross-pollination. Ans: True

True or false 1. Birds have good sense of colour. Ans: True 2. Bee visit mostly nectar producing flowers. 3. Birds have good sense of odour. Ans: False

True or false 1. Pollen can not float on water. Ans: False 2. Wind pollinating flowers have well exposed anthers and stigma. Ans: True 3. Plants pollinated by bats often have pale nocturnal flowers.

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