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Which of the following is not a part of epidermal tissue system? |
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a) |
Companion cells |
b) |
Trichomes |
c) |
Root hairs |
d) |
Guard cells |
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Which of the following is not a part of epidermal tissue system? |
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|
a) |
Companion cells |
b) |
Trichomes |
c) |
Root hairs |
d) |
Guard cells |
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(a) Companion cells are characteristic elements of phloem tissue associated with the sieve tubes in the angiosperms. They are absent in pteridophytes and gymnosperms. |