Multiple choice Which of the following adaptations in flowers does not favour self-pollination? Homogamy Self-Incompatibility Cleistogamy Bud Pollination Reveal answer Fill a bubble to check yourself B Correct answer Explanation In some plants, when the mature pollen falls on the receptive stigma of the same flower, it fails to bring about self-pollination. It is called self-incompatibility. Under such conditions, cross-pollination is the only option.