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In trees, the annual rings represent...

In trees, the annual rings represent

A

Primary xylem

B

Secondary xylem

C

Secondary phloem

D

Cambium

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The correct Answer is:
B
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ALLEN-STRUCTURAL ORGANISATION IN PLANTS (MOPRHOLOGY OF FLOWERING PLANTS & ANATOMY OF FLOWERING PLANTS)-Exercise-I (Primary Internal Structure to Secondary Growth)
  1. A timber merchant told his customer that log of wood which he was purc...

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  2. Growth rings are generally well marked in trees growing in

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  3. In trees, the annual rings represent

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  4. Annual rings are the bands of

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  5. Growth rings are formed due to activity of

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  6. As a tree grows older, which of the following increases more rapidly i...

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  7. lenticels do not occur on

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  8. External protective tissues of plants or dicot stem are

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  9. Which of the following provide maximum mechanical strength to a tree t...

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  10. In a mature dicot stem which has undergone seconday growth, youngest l...

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  11. Extra stelar secondary growth occurs due to the activity of

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  12. Living tissue in lenticel is called

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  13. Normally secondary growth takes place in -

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  14. Select true statements :- (a) Lenticels are absent in woody climbers...

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  15. Formation of which tissue is example of dedifferentation

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  16. What happens to primary phloem in stem after secondary growth? (a) Com...

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  17. Which tissue remains more active during autumn

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  18. Water conduction in stem of tree takes place mainly by -

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  19. How many types of cells are present in vascular cambium of dicot stem

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  20. Cork cambium is a

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