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Question

Which of the following is not a part of epidermal tissue system?

A
Companion cells
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B
Trichomes
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C
Root hairs
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D
Guard cells
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E
Subsidiary cells
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Solution

The correct option is A Companion cells

  • The epidermis is only one layer of cells that covers the leaves, flowers, roots, and stems of plants. It makes a boundary between the plant and the external environment. It comprises epidermal cells, stomata, and epidermal appendages (trichomes and root hairs).
  • It does not contain companion cells. Companion cell is a part of phloem.

So, the correct answer is 'Companion cells.


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