TREE MORPHOLOGY AND ANATOMY
ROOT SYSTEM
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Question
[CLICK ON ANY CHOICE TO KNOW THE RIGHT ANSWER]
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epidermis
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cortex
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vascular cylinder/stele
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none of the above
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Detailed explanation-1: -The inner portion of the root contains the vascular tissue (xylem and phloem). This area is called the stele. A layer of cells known as the endodermis borders the stele (Figure 10.3. 2) and is considered the innermost layer of the cortex.
Detailed explanation-2: -The vascular cylinder, or stele, is the central portion of the plant root and stem. It is comprised of three different components: the pericycle, the xylem, and the phloem.
Detailed explanation-3: -The innermost region of stele is medulla. The outermost region of stele is pericycle.
Detailed explanation-4: -In vascular plants, the stele (or vascular cylinder) forms the central part of the root and is surrounded by outer layers, including the endodermis, cortex and epidermis.