Radish Seed Root And Cotyledons (raphanus Sativus) #1 is a photograph by Dennis Kunkel Microscopy/science Photo Library which was uploaded on September 16th, 2018.
Radish Seed Root And Cotyledons (raphanus Sativus) #1
Radish seed germination (Raphanus sativus), scanning electron micrograph (SEM). Root (with root hairs) and cotyledons emerging from the seed coat.... more
Title
Radish Seed Root And Cotyledons (raphanus Sativus) #1
Artist
Dennis Kunkel Microscopy/science Photo Library
Medium
Photograph
Description
Radish seed germination (Raphanus sativus), scanning electron micrograph (SEM). Root (with root hairs) and cotyledons emerging from the seed coat. Seed germination is the growth of a plant contained within a seed. It depends on both internal and external conditions. The most important external factors include: right temperature, water, oxygen and sometimes light or darkness. The part of the plant that first emerges from the seed is called the embryonic root (also called the radicle or primary root). Root hairs are produced on the primary root in order to start water absorption. After the root absorbs water an embryonic shoot emerges from the seed. This shoot comprises three main parts: the cotyledons (seed leaves), the section of shoot below the cotyledons (hypocotyl), and the section of shoot above the cotyledons (epicotyl). Magnification: x5 when shortest axis printed at 25 millimetres.
Uploaded
September 16th, 2018
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