What is the main role of the carpel in flowering plants?

The carpel's primary function is to house ovules, which are the fertilizable structures that develop into seeds after fertilization. The carpel is a key component of the female reproductive organ of flowering plants, known as the gynoecium. Each carpel consists of three main parts: the stigma, which catches pollen; the style, which connects the stigma to the ovary; and the ovary, where ovules are produced and stored.

Once pollination occurs, the pollen travels down the style and fertilizes the ovules within the ovary, leading to seed development. Therefore, the carpel's ability to house and protect the ovules is critical for reproduction and the continuation of the plant species.

While other roles, such as attracting pollinators, producing pollen, or supporting the plant structure, are essential in the life cycle of flowering plants, they do not define the primary role of the carpel itself.