Question

mention any two outbreeding devices in angiosperm to prevent self pollination?​

Answer 1

Answer:

Three outbreeding devices that flowering plantshave developed: Receptivity of stigma and release of the pollen grain is not synchronized, i.e., stigma becomes receptive much before pollens are released or after they are released toavoid self-pollination.

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Answer 2

The two outbreeding devices in angiosperm plants which help in the prevention of self pollination are as follows :-

• The release of pollen grains and the receptivity of the stigma are not synchronised. Either the stigma become receptive way before the pollen grains get released or else the pollen grains get released way before the stigma becomes receptive.

• The anther and stigma are positioned in such a way in the flower that the pollen grain can not come in contact with the stigma of the same flower to which it belongs by any chance.