Question

In castor and maize plants, _________

• A. both autogamy and geitonogamy are prevented
• B. the anthers and stigma are placed at different positions to encourage cross pollination
• C. autogamy is prevented but not geitonogamy
• D. male and female flowers are borne by different plants

Answer 1

Answer: (C)

In maize and castor plants, unisexual flowers are present.
The flowers are known as unisexual when there are separate sex organs in separate flowers.
However, both the male and female flowers can be present on the same plant. Since there are separate flowers which prevent autogamy. But both the flowers are borne on the same plant. This induces the chances of geitonogamy.