The upward movement of water against gravity in tall trees is primarily due to:
Transpiration pull
Root pressure
Capillary action
Active transport
Related Questions
Nyctinasty and seismonasty in plants like bean and touch me not are produced due to
    Reversible osmotic potential in the cells
    Reversible turgor pressure in the cell of their pulvini
    Due to less pressure potential in the cells
Presence of less turgidity in the cells
    When a plant cell is placed in pure water, it
    Expands until the osmotic pressure reaches that of water
    Becomes less turgid until the osmotic potential reaches that of pure water
    Becomes more turgid until the pressure potential of cell reaches its osmotic potential
    Becomes more turgid until the osmotic potential reaches that of pure water
The value of pure water potential is
Always positive or more than zero
Always negative or less than zero
Always zero
Variable in different solution
Nyctinasty and seismonasty in plants like bean and touch me not are produced due to
    Reversible osmotic potential in the cells
    Reversible turgor pressure in the cell of their pulvini
    Due to less pressure potential in the cells
Presence of less turgidity in the cells
    Diffusion pressure deficit is also called
Suction pressure
Turgor pressure
Osmotic pressure
None of these
    Consider the following statements and choose the correct answer from the options given below
I.    A dry live seed still contains water
II.    A mature maize plant absorbs about 3 L water per day
III.    A mustard plant take up water equal to its weight in about five hours
IV.    Water is not considered as the limiting factor for plant growth and productivity
I, II, III and IV
IV and II
I, II and III
Only IV
Which of the following contributes the most to the long-distance transport of water in tall trees?
Root pressure
Capillary action
Transpiration
Active transport by xylem cells
Which of the following statement is correct?
DPD=OP-WP
DPD=OP+WP
DPD=WP-OP
DPD=TP+OP
    Diffusion pressure deficit is also called
Suction pressure
Turgor pressure
Osmotic pressure
None of these
Water potential gradient decides?
Direction of movement of water
Concentration of Solute
Rate of movement of water
1 and 3
