Question

Which are the out breeding divices

Answer 1

Answer:

The outbreeding devices in angiosperm plants that encourage cross-pollination are:

The outbreeding devices in angiosperm plants that encourage cross-pollination are:Dicliny- Flowers are unisexual so that self-pollination is not possible. ...

The outbreeding devices in angiosperm plants that encourage cross-pollination are:Dicliny- Flowers are unisexual so that self-pollination is not possible. ...Prepotency: Pollen grains of another flower germinate more rapidly over the stigma than the pollen grains of the same flower (example apple and grape).

Explanation:

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Answer 2

Plants have many mechanisms and devices that they employ to promote cross-pollination, these are called as outbreeding devices.

The outbreeding devices in angiosperm plants that encourage cross-pollination are:

1. Dicliny-  Flowers are unisexual so that self-pollination is not possible. The plants may be monoecious,  that is, bearing both male and female flowers (example: maize) or dioecious, that is, bearing male and female on different plants (example: Mulberry and papaya).

2. Prepotency: Pollen grains of another flower germinate more rapidly over the stigma than the pollen grains of the same flower (example apple and grape).

3. Self sterility: Pollen grains of a flower do not germinate on the stigma of the same flower due to the presence of the similar self-sterile genes.

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