Biology · SEXUAL REPRODUCTION IN FLOWERING PLANTS

In the plant shown in the diagram producing two types of flowers (chasmogamous and cleistogamous), which of the following is true regarding the flowers labelled at the base (underground)?

1. They are cleistogamous flowers that do not open at all and ensure autogamy.
2. They are chasmogamous flowers with exposed anthers and stigma.
3. They depend entirely on wind pollination for fertilization.
4. They show only xenogamy resulting in high genetic diversity.