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When secondary growth in thickness is in...

When secondary growth in thickness is initiated in a dicot root, which of the following happens first ?

A

Cambial initials between xylem and phloem will

B

Pericycle strands, outside the primary xylem will

C

Periclinal division takes place, so that the becomes circular

D

Purenchymatous cells between xylem and phloem become meristematic

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The correct Answer is:
D
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  4. In respect of many grasses, the presence of bulliform or motor cells i...

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  5. Spring wood (early wood) differs with autumn wood (late wood) in-

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  6. Select true statements :- (a) Lenticels are absent in climbers and l...

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  7. In dicot root which tissue becomes dead due to activity of phellogen

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  8. Match the following columns.

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  9. Common features between lenticles and hydathodes are

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  10. Secondary growth in dicots and gymnosperms occurs by

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  11. As a tree grows very old, which of the following increases more rapidl...

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  12. When secondary growth in thickness is initiated in a dicot root, which...

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  13. A stem-boring beetle has laid its eggs in the center 5-year-old wood t...

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  14. Passage cells are thin walled cells found in

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  15. Which of the following statement(s) is/are true about parenchyma?

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  16. Which of the following tissue provides mechanical support of the growi...

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  17. Vessels differ from tracheids in having

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  18. Which meristem helps in increasing girth?

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  20. Which is correct statement?

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