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Water containing cavities in vascular bu...

Water containing cavities in vascular bundles are found in

A

sunflower

B

maize

C

Cycas

D

Pinus

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The correct Answer is:
b
In monocot stem like Zea mays, vascular bundles are conjoint , collateral and closed .In vascular bundles , the lowermost protoxylem vessels and xylem parenchyma cells dissolve forming a water containing schisolysigenous cavity called protoxylem cavity or lacuna or lysigenous cavity. Protoxylem cavity and protophloem may be absent in the smaller vascular bundles in maize.
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NEET PREVIOUS YEAR (YEARWISE + CHAPTERWISE)-ANATOMY OF FLOWERING PLANTS-Exercise
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  2. Companion cells are closely accociated with Or Transport of food...

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  3. Water containing cavities in vascular bundles are found in

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  4. Closed vascular bundles lack

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

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  6. Ground tissue includes

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

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

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  9. heart wood differs from sapwood in

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  10. Palisade parenchyma is absent in leaves of

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

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

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  13. In barley stem vascular bundles are

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

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  15. Vascular tissues in flowering plants develop from

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  16. Passage cells are thin walled cells found in

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

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  18. A common structural feature of vessel elements and sieve tube elements...

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  19. In a woody dicotyledonous tree, which of the following parts wall main...

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  20. In a longitudinal section of a root, starting from the tip upward, th...

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