radicle

(noun)

the rudimentary shoot of a plant that supports the cotyledons in the seed and from which the root is developed downward; the root of the embryo

Related Terms

Examples of radicle in the following topics:

  • Development of the Seed

    • The embryonic axis consists of three parts: the plumule, the radicle, and the hypocotyl.
    • The portion of the embryo between the cotyledon attachment point and the radicle is known as the hypocotyl.
    • The embryonic axis terminates in a radicle, which is the region from which the root will develop.
    • During this time, the radicle is also growing and producing the primary root.
    • The embryonic axis comprises everything between the plumule and the radicle, not including the cotyledon(s).

  • Types of Root Systems and Zones of Growth

    • When the plant embryo emerges from the seed, the radicle of the embryo forms the root system.

  • The Evolution of Roots in Seedless Plants

    • When the plant embryo emerges from the seed, the radicle of the embryo forms the root system.

  • Diversity of Angiosperms

    • The root system is usually anchored by one main root developed from the embryonic radicle.

  • The Life Cycle of an Angiosperm

    • The zygote develops into an embryo with a radicle, or small root, and one (monocot) or two (dicot) leaf-like organs called cotyledons.