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Dumbell shaped structures in grasses is...

Dumbell shaped structures in grasses is

A

Stoma

B

Guard cell

C

Substidary cell

D

Stomatal complex

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The correct Answer is:
B
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AAKASH SERIES-TRANSPORT IN PLANTS -EXERCISE III
  1. Dumbell shaped structures in grasses is

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  2. The water potential of pure water is:

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  3. Which of the following facillitates opening of stomatal aperture ?

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  4. Specialized epidermal cells surrounding the guard cells are called

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  5. The phloem sap is

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  6. Water vapour comes out from the plant leaf through the stomatal openin...

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  7. Root pressure is usually because of

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  8. Roots play insignificant role in absorption of water in

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  9. A column of water within xylem vessels of tall trees does not break un...

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  10. Transpiration and root pressure cause water to rise in plants by

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  11. The osmotic expansion of a cell kept in water is chiefly regulated by

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  12. Lenticels are involved in

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  13. Which of the following criteria does not pertain to facilitated transp...

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  14. Which one of the following is correctly matched

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  15. Guard cells differ from other epidermal cells in having

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  16. Which one of the following elements in plants is not remobilised ?

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  17. Guttation is the result of

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  18. Which one of the following structures between two adjacent cells is an...

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  19. Guard cells helps in

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  20. The rupture and fraction do not usually occur in the water column in v...

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  21. Two cells A & B are contiguous. Cell A has osmotic pressure 10 atm, tu...

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