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Question : On the basis of numbers, give types of stament and give examples.

Answer»

Solution :Androecium is composed of stamens. Each stamen represents male reproductive organ.
Each stamen consists of a FILAMENT and anther.
Pollen grains are produced in pollen-sacs.
Each anther is usually bilobed and each lobe has two chambers, the pollen-sacs. Pollen grains are produced in pollen-sacs.
A sterile stamen is CALLED staminode.
Filament and anther are CONNECTED by connective.
Stamens of flower may be united with other members such as petals or among themselves.
Epipetalous : When stamens are attached to the petals, they are epipetalous e.g. brinjal.
Epiphyllous : When stamens are attached to the PERIANTH they are epiphyllous as in the flower lily
Polyandrous : The stamens in a flower may either remain free is called Polyandrous.
Monoadelphous : The stamens may be united into one bunch or one BUNDLE is called monoa delphaes c.g. china rose.
Diadelphous and Polydelphous : Stamens may be united in two bundles is called Diadelphous. Stamens may be united into more than two bundles is called Polydelphous stamen.
There may be a variation in the length of filaments within a flower, e.g. Salvia and mustard.


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