Question

angiosperm flowers may be monoecious, cleistogamous or show self incompatibility describe the characteristic features of each one of them and state which one of these flowers promotes inbreeding and outbreeding respectively​

Answer 1

Answer:

1. Monoecious plants are those in which both male and female flowers are present on the same plant. For example, castor and maize. This prevents autogamy but not geitonogamy.Monoecious Flowers promote inbreeding.

2. Cleistogamous flowers are those which do not open at all. In such flowers, the pollens have to land on the stigma of the same flower. Thus, cleistogamous flowers are invariably autogamous.

Self pollinationis assured and so they show inbreeding.

3. Self-incompatibility is a genetic mechanism and prevents self pollen (from same flowers or other flowers of the same plant) from fertilising the ovules by inhibiting pollen germination or pollen tube growth in the pistil. It promotes outbreeding.