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Scotoactive stomata are seen in...

Scotoactive stomata are seen in

A

Succulent xerophyte

B

Mesophytic grasses

C

Hydrophytes

D

None of the above

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The correct Answer is:
**Step-by-Step Solution:** 1. **Understanding Scotoactive Stomata**: - Scotoactive stomata are specialized types of stomata that open during the night and close during the day. This is contrary to the typical behavior of stomata, which usually open during the day for photosynthesis and close at night. 2. **Identifying the Function**: - The primary function of scotoactive stomata is to minimize water loss during the day when transpiration rates are higher due to sunlight and heat. By opening at night, these stomata allow for gas exchange (like CO2 uptake) while reducing water loss. 3. **Identifying Plant Types**: - Scotoactive stomata are typically found in plants that are adapted to arid environments, such as xerophytes. These plants have evolved mechanisms to conserve water, making them reliant on nighttime gas exchange. 4. **Evaluating the Options**: - The question provides several options: - Succulent - Mesophyte - Grass - Hydrophytes - None of the above - Among these, succulents are a type of xerophyte that store water and have adaptations like scotoactive stomata to prevent water loss. 5. **Conclusion**: - Therefore, the correct answer to the question "Scotoactive stomata are seen in" is **succulent** plants. ---
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AAKASH SERIES-TRANSPORT IN PLANTS -EXERCISE III
  1. Scotoactive stomata are seen in

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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. Specialised epidermal cells surrounding the guard cell 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 stomata} openin...

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  7. Root pressure is usually because of

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  8. Roots play insignificant 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 cell help in :

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

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

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