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Annual ring is...

Annual ring is

A

Meristematic and produce secondary xylem and secondary phloem centripetally and centrifugally

B

Dead and produce secondary xylem and secondary phloem centripetally and centrifugally

C

Secondary xylem and secondary phloem produced by vascular cambium

D

Secondary xylem produced by vascular cambium

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The correct Answer is:
D
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AAKASH SERIES-HISTOLOGY AND ANATOMY OF FLOWERING PLANTS-EXERCISE - I (SECONDARY GROWTH)
  1. Which type of vascular bundles participate in normal secondary growth ...

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  2. Secondary growth is usually absent in

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  3. Annual ring is

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  4. During secondary growth of dicot root, origin of complete phellogen an...

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  5. During secondary growth of dicot stem, the growth of the phloem rays i...

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  6. Entire vascular cambium is formed due to dedifferentiation during the ...

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  7. The photosynthetic part of periderm that lies inner to phellogen is

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  8. A primary meristem that produces secondary tissues is

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  9. Vascular cambium ring of dicot stem is formed by

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  10. Choose incorrect pair

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  11. Which part is derived from both vascular cambial ring and cork cambium...

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  12. During secondary growth in dicot stem complimentary cells are formed f...

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  13. The parenchymatous cells found in lenticel are

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  14. Which is the common part formed due to the activity of vascular cambiu...

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  15. In a woody dicot stem twenty spring woods and twenty autumn woods are ...

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  16. The study of estimation of age of the tree by counting the number of a...

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  17. Function of xylem ray parenchyma is

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  18. Number of annual rings from base to apex of stem of dicot during secon...

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  19. Cork is impervious to water due to the presence of in its cell wall.

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  20. Each annual ring (growth ring) consists of

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