Low level of CO2 favours _________ of the stomata.

Related Mcqs:

1. There are _________ stomata per square cm of leaf surface in Tobacco plants?

   A. 1200
   B. 12000
   C. 100,000
   D. 1000

2. There are _________ hypothesis which may explain opening and closing of stomata?

   A. One
   B. Two
   C. Three
   D. Four

3. Stomata open due to _________ of K+ into the guard cells from the surrounding epidermis

   A. Diffusion
   B. Active transport
   C. Osmosis
   D. All of these

4. Stomata cover only ______________ of leaf surface?

   A. 0.03 – 0.04%
   B. 10%
   C. 1-2 %
   D. 50%

5. The opening and closing of stomata is directly controlled by the___________?

   A. Temperature
   B. pH
   C. Light
   D. None of these

6. Arterial blood contains _________ of CO2 per 100 ml of blood

   A. 54 ml
   B. 60 ml
   C. 64 ml
   D. 50 ml

7. Animals that produce metabolic heat at low level and also absorb heat from the surroundings are called__________?

   A. Endotherms
   B. Ectotherms
   C. Heterotherms
   D. Homeotherms

8. Air contains __________ % of CO2 ?

   A. 0.02-0.03
   B. 0.03-0.04
   C. 0.04-0.05
   D. 0.05-0.06

9. Percentage of CO2 carried as carboxyhaemoglobin is_________?

   A. 5%
   B. 70%
   C. 20%
   D. 10%

10. In Urea cycle __________ ammonia molecules combine with 1 CO2 molecule to form 1 molecule of urea.

    A. 1
    B. 2
    C. 3
    D. 4