1. Which type of fibres mainly occur in phloem

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

3. Vessels differ from tracheids

4. Quiescentcentre is found in the plant at

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

6. Endodermis cells are rich in

7. “Patua” is obtained from Hibiscus sabdariffa is

8. Most conspicuous annual rings form in:

9. Vascular bundles in dicot stem are

10. Mechanical tissue consisting of living cells is

11. Wound healing in plants is initiated by

12. Closed vascular bundles lacks

13. Walls of sclerenchyma are

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

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

16. Bark includes all the tissues

17. Pith is very well developed in

18. A wood with scattered parenchyma is called

19. Fusifrom initial cells of cambium from

20.  Bicollateral bundles are found in the stem of