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The opening and closing of the stomatal ...

The opening and closing of the stomatal pores depends upon :

A

oxygen

B

water in guard cells

C

temperature

D

concentration of `CO_(2)` in stomata

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The correct Answer is:
B
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LAKHMIR SINGH & MANJIT KAUR-LIFE PROCESSES-Exercise
  1. The internal energy (cellular energy) reserve in autotrophs is :

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  2. Which of the following events does not occur in photosynthesis ?

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  3. The opening and closing of the stomatal pores depends upon :

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  4. Most of the plants obtain nitrogen from soil in the form of

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  5. The first enzyme to mix with food in the digestive tract is:

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  6. Which of the following is the correct statement ?

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  7. In which of the groups of organisms the food material is broken down o...

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  8. Which is the correct sequence of parts in human alimentary canal?

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  9. When a person eats sugary food, then organisms A present in his mouth ...

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  10. If the teeth are not cleaned regularly, they become covered with a sti...

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  11. When a person puts food in his mouth, then teeth cut it into small pie...

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  12. The partially digested food coming from the stomach of a person enters...

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  13. A unicellular animal P having no fixed shape ingests a food particle b...

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  14. There are four organisms A, B, C and D. The organism A eats only the f...

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  15. The organism A, B and C can obtain their food in three different ways....

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  16. An organism A which cannot move from one place to another, makes a sim...

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  17. X is a wild animal which eats only the flesh of other animals whereas ...

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  18. Do all cells use oxygen to produce energy ?

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  19. Name one substance which is produced in anaerobic respiration by an or...

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  20. Name one organism which can live without oxygen

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