1. Most conspicuous annual rings form in:

2. The waxy substance associated with the wall of the cork cell is

3. Closed vascular bundles lacks

4. Pith is very well developed in

5. Vascular bundles in dicot stem are

6. A meristematic region present between the xylem and the phloem of open vascular bundles is called

7. After the secondary growth, the oldest layer of secondary phloem in a dicot stem is located

8. Mechanical tissue consisting of living cells is

9. “Patua” is obtained from Hibiscus sabdariffa is

10. The innermost layer of cortex which shows casparian thickenings in its cells is called as

11. Walls of sclerenchyma are

12. Wound healing in plants is initiated by

13. Bark includes all the tissues

14. Endodermis cells are rich in

15.  Bicollateral bundles are found in the stem of

16. Fusifrom initial cells of cambium from

17. Which type of fibres mainly occur in phloem

18. Vessels differ from tracheids

19. Quiescentcentre is found in the plant at

20. A wood with scattered parenchyma is called