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The wall-thickening material in tracheid...

The wall-thickening material in tracheids and vessels are

A

cutin and suberin

B

cellulose and cutin

C

suberin and cellulose

D

lignin and cellulose

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The correct Answer is:
D
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TRUEMAN BIOLOGY-ANATOMY OF FLOWERING PLANTS -MULTIPLE CHOICE QUESTIONS
  1. A secondary meristematic tissue can develop due to the resumption of p...

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  2. A permanent secondary tissue is production by the activiv of

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  3. The wall-thickening material in tracheids and vessels are

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  4. The ladder like thickenings in tracheids and vessels are called

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  5. A distinguishing feature of companion cells is that they arise from th...

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  6. Statement : While observing transvers sections of two steams, the anat...

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  7. The distinguishing anatomical features of stem are that they have

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  8. In the endodermis of root the passage cells have

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  9. After the commencement of secondary growth in dicot stem, the primary ...

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  10. A characteristic feature of a transverse section of an old dicot root ...

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  11. Healing of wound in plants takes place by the activity of

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  12. Conjunctive tissue found in stelar region of roots is

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  13. Hard woods have

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  14. Youngest heart wood is present

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  15. Oldest phloem occurs on the outerside of phloem/inner to pericycle. It...

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  16. Oldest xylem is that primary xylem found

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  17. In monocot root, we observe

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  18. What happens to primary xylem and primary phloem during secondary grow...

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  19. Duramen is used as timber because

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  20. Medullary rays are mainly

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