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A common structural feature of vessel elements and sieve tube elements are

A. pores on lateral walls.

B. presence of p-protein.

C. enucleate condition.

D. thick secondary walls.

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  1. As secondary growth proceeds, in a dicot stem, the thickness of
  2. When we peel the skin of a potato tuber, we remove
  3. Which of the following are present in monocot root ?
  4. A narrow layer of thin walled cells found between phloem/ bark and wood of a dicot is
  5. Which of the following figure is a type of permanent tissue having many different types of cell?
  6. A common structural feature of vessel elements and sieve tube elements are
  7. Match column-I with column-II and choose the correct option.Column -IColumn -IIA. Bulliform cellsI.…
  8. The vessel elements of angiosperms differ from other elements of xylem in having
  9. The given figure shows the T.S of dicot root. Some parts are marked as A, B, C, D, E, & F. Choose the…
  10. In the given figure of phloem tissue, identify the marked part (A, B and C) which help in maintaining…
  11. Match column-I with column-II and select the correct option from the codes given below.Column-IColumn-IIA.…
  12. Which one of the following statement is incorrect ?Epidermal cell has small amount of cytoplasm and…
  13. Which one of the followings option shows the correct labelling of the parts marked as A, B, C and D…
  14. Sieve tubes are suited for translocation of food because they possess
  15. A piece of wood having no vessels (trachea) must be belonged to
  16. Which of the following statements is correct?
  17. Which of the following process helps the trichomes in preventing water loss?
  18. Apical, intercalary and lateral meristems are differentiated on the basis of
  19. In stems, the protoxylem lies towards the _____________ and the metaxylem lies towards the ____________…
  20. During the formation of leaves and elongation of stem, some cells left behind from the shoot apical…
  21. A tissue is a group of cells which are
  22. Match the elements of xylem given in column I with their character given in the column II and choose…
  23. Trees at sea do not have annual rings because
  24. A student was given a tissue to observe under the microscope. He observes the tissue and concludes that…
  25. Choose the correct labelling of (A J) in the given figure of T.S. of monocot root.
  26. Which one of the following option shows the correct labelling of the parts marked as A, B, C and D in…
  27. Which type of plant tissue is being described by the given statements?It consists of long, narrow cells…
  28. Cambium is considered as a lateral meristem because
  29. Match column-I with column-II and choose the correct option.A. Spring wood orI. Lighter in colour early…
  30. The trees growing in desert will