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Heart wood or duramen is...

Heart wood or duramen is

A

Outer region of secondary xylem

B

Inner region of secondary xylem

C

Outer region of secondary phloem

D

Inner region of secondary phloem

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The correct Answer is:
B
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Explore conceptually related problems

Heart wood is the

Statement-1 : The heart wood is more durable and resistant to the attack of the micro orgganims and insects as compared ot the sap wood. Statement-2: The heart wood contain organic compounds like oils , aromatic substance , gums, resin, tannins and phenol etc.

(A) heart wood is durable, dark and central in position. (B) Tyloses are balloon like structures of xylem parenchyma in vessel lumen. (C ) Late wood is formed during spring season.

Sap wood/Heart wood is dark brown in colour.

Heart wood is softer than the sap wood and not durable.

heart wood differs from sapwood in

Heart wood of most of the woody tress, fails to conduct sap due to the obstruction by ?

heart wood comprises dead elemetnns with highly (A)_____ walls and it does not conduct water &Minerals.

CENGAGE BIOLOGY-ANATOMY OF FLOWERING PLANTS -ARCHIVES
  1. Heart wood or duramen is

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  2. passage cells are thin- walled cells found in

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

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  4. Which one of the following is resistant action

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

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  6. Vascular tissues in flowering plants develop from

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  7. Which one is encleacted ?

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  8. In barley stem vascular bundles are

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  9. Palisade parenchyma is absent in leaves of

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

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

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  12. heart wood differs from sapwood in

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  13. Which one of the following is not a lateral meristem

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  14. The chief water conducting elements of xylem in gymnosperms are

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  15. Ground tissue includes

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  16. The cork cambium, cork and secondary cortex are collectively called

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  17. Which of the following is wrongly matched ?

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  18. In land plants the guard cells differ from other epidermal cells in ha...

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  19. The cambium which produces cork is known as Or The common bottle c...

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  20. Closed vascular bundles lack

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  21. Water containing cavities in vascular bundles are found in

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