Question

how a flower with single carpel produce many seed

Answer 1

carpels ultimately develop into fruit tissue, the number of carpels in a flower determines the degree to which pollination and seed development is required to produce fruit.

Flowers with one carpel only require fertilization of one of the two ovules to produce fruit.

Answer 2

Answer:

Flowers with one carpel only require fertilization of one of the two ovules to produce fruit. In contrast, species with multiple fused carpels require fertilization of a smaller proportion of the total ovules within a flower for fruit development.