Stomatal opening is regulated by
Light
Temperature
Atmospheric humidity
Wind
Related Questions
Stomata Movement Is not affected by
concentration
Temperature
concentration
Light
Why the tropical deciduous forest trees shed their leaves?
To save energy
To protect itself from chat
To enhance rate of respiration
To prevent loss of water
Consider a plant exhibiting guttation. Which of the following statements regarding the xylem sap at night is MOST accurate?
Transpiration pull generates negative pressure in the xylem
Root pressure generates positive hydrostatic pressure in the xylem
Cohesion-tension theory is the primary driver of xylem sap movement
Xylem sap movement ceases entirely at night
Read the following statement carefully and choose the right answer from the codes given below
I. PMA and silicon oil of low viscosity are considered as antitranspirant
II. BAP, NAA and cobalt chloride is also used as antitranspirant
III. Abscisic acid affects the mechanism of opening and closing of stomata
IV. Starch of guard cells is converted into PEP ions by the process of hydrolysis
V. Potometer works on the principle of potential difference between the tip of the tube and that of plant
VI. Transpiration rate is directly proportional to the relative humidity
I and III
II and IV
I, II and III
III, IV and V
Stomatal opening is regulated by
Light
Temperature
Atmospheric humidity
Wind
Which of the following facilitates opening of stomatal aperture?
Longitudinal orientation of cellulose microfibrils in the cell wall of guard cells
Contraction of outer wall of guard cells
Decrease in turgidity of guard cells
Radial orientation of cellulose microfibrils in the cell wall of guard cells
The sugarcane plant has
Dumb bell-shaped guard cells
Pentamerous flowers
Reticulate venation
Capsular fruits
Scotoactive stomata are seen in?
Succulent plants
Mesophytic grass
Hydrophytes
Mesophytic trees
In tall plants, because of which factor, continuous water column extends upward?
Atmospheric pressure
Osmotic pressure
Suction pull
Root pressure
Wilting occurs when
Rate of transpiration is higher than absorption
Rate of absorption is higher than transpiration
Excess root pressure
High relative humidity in air
