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(a) Identify Figures A, B and C.
(b) Which one of them has heavy deposition of lignin ?
(c) Which one of them provides both mechanical strength as well as flexibility ?
(d) Which one of them can be modified to form air cavities in aquatic plants ?
(e) Which one of them is commercially exploited to obtain Hemp and Jute ?

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(a) Figure A-T.S. collenchyma,
Figure B-T.S. parenchyma,
Figure C-T.S. sclerenchyma fibres.
(b) Tissue which has heavy deposition of lignin is sclerenchyma .
(c) Tissue which provides both mechanical strength and flexibility is collenchyma.
(d) Parenchyma is modified to arenchyma having air cavities in the aquatic plants.
(e) Fibres of Hemp and Jute are obtained from the sclerenchyma fibres.

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