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Question

Endodermis is a part of

A
Vascular tissue system
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B
Extra-stelar tissue system
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C
Epidermal tissue system
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D
Intra-stelar tissue system
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Solution

The correct option is B Extra-stelar tissue system
Vascular tissue system is derived from procambium and is comprised of xylem, phloem and cambium.
Epidermal cells make the outermost covering of primary plant body. They are compactly arranged, barrel-shaped parenchyma cells with no or little intercellular spaces. It includes epidermis and epidermal appendages, which are derived from epidermis e.g., stomata, guard cell, trichome etc. The stele is the central region of stem and root, which is comprised of vascular bundles, pericycle, pith and medullary rays. Thus interstellar tissues include vascular bundles, pericycle, pith and medullary rays.
The tissues system, present outside the stele is termed as extra-stelar tissues system, which includes endodermis, primary and secondary cortex and epidermis. Thus,

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