Question

1. Identify Figures A, B and C.
2. Which has heavy lignin deposition?
3. Which provides mechanical strength as well as flexibility?
4. Which can form air cavities in aquatic plants?
5. Which is commercially exploited to obtain hemp and jute?

Answer 1

1. A - transverse section of collenchyma; B - transverse section of parenchyma; C - sclerenchyma fibres. 
2. Sclerenchyma (Figure C). 
3. Collenchyma (Figure A). 
4. Parenchyma (Figure B) can be modified into aerenchyma, which has air cavities. 
5. Sclerenchyma fibres (Figure C) are used to obtain hemp and jute.