The devices to discourage self-pollination ar | vedclass

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(D) Outbreeding devices are mechanisms that plants use to discourage self-pollination and encourage cross-pollination. These include:$1$. Non-synchron

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All of these

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(D) Outbreeding devices are mechanisms that plants use to discourage self-pollination and encourage cross-pollination. These include:$1$. Non-synchronization of pollen release and stigma receptivity.$2$. Placement of anther and stigma at different positions.$3$. Self-incompatibility (a genetic mechanism preventing self-pollen from fertilizing the ovules).$4$. Production of unisexual flowers.Therefore,all the given options are devices to discourage self-pollination.

The devices to discourage self-pollination are:

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