Which term refers to the embryonic structure that develops into the first root of a bean seedling?

The term that refers to the embryonic structure developing into the first root of a bean seedling is the radicle. The radicle is the part of the seed embryo that will grow into the primary root during germination. It anchors the plant and absorbs water and nutrients from the soil.

The hypocotyl is the part of the stem that occurs below the cotyledons and above the radicle, and while it plays a crucial role in seedling development, it does not develop into the root itself. The meristem refers to the regions of rapid cell division that contribute to plant growth but is not a specific structure that becomes the root. The cotyledon, which is often referred to as a seed leaf, serves as a source of nutrients for the growing plant but does not develop into the root.

Understanding these structures and their functions is essential in plant biology and seed development.