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The annular and spirally thickened condu...

The annular and spirally thickened conducting elements generally develop in the protoxylem when the root or stem is

A

Elongating

B

Widening

C

Differentiating

D

Maturing

Text Solution

Verified by Experts

The correct Answer is:
D
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AAKASH INSTITUTE-ANATOMY OF FLOWERING PLANTS -Section C Previous Year Questions
  1. Transport of food material in higher plants takes place through

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  2. Anatomically fairly old dicotyledonous root is distinguished from the ...

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  3. The annular and spirally thickened conducting elements generally deve...

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  4. Palisade parenchyma is absent in leaves of

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  5. In barely vascular bundles are

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  6. Reduction in vascular tissue mechanical tissue and cuticle is charac...

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  7. Vascular tissues in flowering plants develop from

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  8. The length of different internodes in a culm of sugarcane is variable ...

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  9. For a critical study of secondary growth in plants, which one of the...

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  10. Passage cells are thin walled cells found in

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  11. A common structural feature of vessel elements and sieve tube elements...

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  12. In a woody dicotyledonous tree, which of the following parts wall main...

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  13. Meristematic tissue responsible for increase in girth of tree trunk is

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  14. Axillary bud and terminal bud are derived from the activity of

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  15. Procambium is situated just behind apical meristem. Procambium gives r...

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  16. The cells of the quiescent centre are characterised by

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  17. Apical meristem of root is present

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  18. Which one of the following is not true about 'sclereids'?

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  19. Chlorenchyma is known to develop in the

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  20. Vessels are found in:-

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