Sunday, April 3, 2011

(I)GCSE Topic 3.3 a) Insect-Pollination

-In the process of pollination, there has to be a transfer of pollen grains from the anthers of a flower to the stigma of another.

-Pollen is a small structure of the plant which contains the male neuclei.

-The transfer of Insect Pollination takes place by Insects. And so it is neccessary for the insect to be attracted by the first flower and have a reason to go into the second flower.

-The pollen of one plant going into another is called 'Cross Polination'.

-Things attracting the Insects: coloured petals, Scents, Value to the insect for going to the plant is food which is fructose/nectaties.

-Stamen is the male part of the plant which produces the pollen granes. The anther and the fillament form the stamen.

-The female part of the plant contains Stigme, Style, Ovary. This whole structure is called the CARPOL.

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