BIOL-1507EL Lecture Notes - Lecture 6: Epicotyl, Radicle, Germination
11 Feb 2020
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Document Summary
Reproduction and development in flower plants of stem below the attachment of the cotyledons. If the two halves of bean seed are parted, you can see aredumentry plant and its called plumule. The epicotyl is the portion of the stem above the attachment of the cotyledons. The radicle is the part of the embryo that contains the root apical cell and becomes the first (primary) root. Corn kernels are actually fruit, and the outer covering is the pericarp . The bulk of the food storage tissue is. The plumule and radicle are enclosed in a protective sheath called coleoptile and coleorhiza respectively. The plumule and the radicle burst through these coverings when germinations occur endosperm, and the cotyledons does not play a role in storage. The first step in germination of many seeds is imbibition, the absorption of water by the dry seed. The first organ to emerge from the germinating seed is the radicle (embryonic root)
