Question

Explain any two outbreading devises that flowering plants have developed to encourage cross polination?

Answer 1

Outbreeding devises that have developed to encourage cross pollination

Explanation:

• Plants have several systems to prevent self pollination and encourage cross pollination, to promote variations.
• Different outbreeding devices are-
• Dicliny- unisexual flowers cannot be self-pollinated for example- papaya.
• Prepotency-  another flowers pollen matures more quickly than that of the same flower.
• Heterostyly:  Anther and stigma have different floral levels which prevents self pollination and fertilization.
• Protandry: Androecium matures before gynoecium to prevent self pollination.