Which type of transpiration accounts for the majority of water loss in plants?
Cuticular
Lenticular
Stomatal
Hydathode
Related Questions
Water is lost in a liquid state in some plants through hydathodes. These hydathodes
    Remain closed at night
    Remain closed during day
    Remain always open
    Do not show any specificity in opening and closing
The shape of guard cells in stomata in sugarcane plant is
    Dumb bell-shaped
Bean shaped
Horse shoe shaped
Irregular shaped
Which one of the following is not an antitranspirant?
    PMA
BAP
Silicon oil
Low viscosity
    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
The cohesion-tension theory explains the ascent of sap in plants. The 'cohesion' part of this theory refers to:
The attraction between water molecules and xylem walls
The attraction between water molecules
The evaporation of water from the leaf surface
The active transport of water into the xylem
The sugarcane plant has
Dumb bell-shaped guard cells
Pentamerous flowers
Reticulate venation
Capsular fruits
Guard cells help in
Transpiration
Guttation
Fighting against infection
Protection against grazing
What will be the effect of accumulation of ions in guard cells?
Water potential increases
Water potential decreases
Loss of turgidity
Exosmosis
Arrange the events of opening stomata in correct sequence and choose the correct option accordingly I. Lowering of osmotic potential of guard cells II. Decline in guard cell solute III. Rise of potassium ion level in guard cells IV. Guard cells absorb water from neighbouring epidermal cells V. Guard cells become flaccid VI. Guard cells swells and make a pore between them
III, I, IV, V
I, II, III, IV, V, VI
III, I, IV, VI
III, I, IV, VI, II, V
A plant with a mutation affecting its abscisic acid (ABA) receptors is exposed to drought conditions. Which would be the LEAST likely observation?
Reduced transpiration
Increased leaf wilting
Reduced root growth
Increased expression of drought-responsive genes
