Question

Give one example each of a unisexual flower and a bisexual flower. Mention the changes which a flower undergoes after fertilization.

Hint:

Unisexual flowers have only one reproductive organ, while bisexual flowers have both male and female organs. After fertilization, the ovule becomes a seed and the ovary becomes a fruit.

Answer 1

Unisexual Flower: A unisexual flower has only one sex organ, either male or female.
- Example: The male flower of corn (maize) produces only pollen (male gametes).
Bisexual Flower: A bisexual flower has both male and female reproductive organs.
- Example: A rose is a bisexual flower, as it contains both stamens (male part) and pistils (female part).
Changes After Fertilization:
1. After fertilization, the ovule in a bisexual flower develops into a seed, and the ovary develops into a fruit.
2. The petals and other non-reproductive parts of the flower usually fall off after fertilization.