Which structure is involved in the attachment of a seed to the ovary wall?

The correct structure involved in the attachment of a seed to the ovary wall is the hilum. The hilum serves as the scar on the seed that marks the point of attachment to the ovule, which in turn is connected to the ovary wall. It is through this connection that the seed receives nutrients during its development before it is fully matured and detached upon seed dispersal.

This attachment is crucial for the seed’s development as it allows for the transfer of nutrients and support during the early stages of growth. Understanding the role of the hilum helps in grasping the process of how seeds develop within the fruit, and its significance in plant reproduction and seed dispersal mechanisms.