flower pol

Information about flower pol

Published on January 12, 2008

Author: Rainero

Source: authorstream.com

Content

How a Flower is Pollinated:  How a Flower is Pollinated The purpose of all flowers is to be pollinated and produce seeds What do petals do?:  What do petals do? Partly used to protect the male and female parts of the plant Some plants use wind to blow the pollen and they have small leaves Plants which use insects to transfer the pollen usually have large petals which smell and are brightly coloured What is the male part?:  What is the male part? The male part of the flower is called the stamen It has a long stalk called the filament At the top of the filament is the anther What is the anther?:  What is the anther? The anther produces pollen What is the female part?:  What is the female part? Carpels are the female parts They are made up of a stigma, style and ovary What is the stigma?:  What is the stigma? It is at the top of the carpel It is sticky which helps catch pollen grains What are the ovaries?:  What are the ovaries? The ovaries are where the eggs are made How does pollination take place?:  How does pollination take place? Pollen grains brush against the insect, it flies to another plant, the grains rub on the stigma The grain of pollen grows a tube, which goes down the style until it reaches the ovary The male part joins with the female part to form a seed. This is called fertilisation. After fertilisation the petal drop off because they are no longer needed

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