Which of the following statements is/are true?
I. The apoplastic movement of water occurs exclusively through the cell wall without crossing any membranes.
II. Solutes present in a cell (or in any solution) increase the free energy of water or water potential.
III. The symplastic movement occurs from cell to cell through the plasmodesmata. IV.Membrane permeability depends on the membrane composition, as well the chemical nature of the solute.
I and II only
II and Iv only
I, III and IV only
I, II and IV only
Related Questions
A plant with a higher concentration of solutes in its root cells compared to the surrounding soil will:
Absorb water more easily
Lose water to the soil
Not be affected
Become plasmolysed
Which of these factors LEAST affects the rate of water absorption by roots?
Soil water potential
Root hair density
Temperature
Light intensity
Which of the following statements is/are true?
I. The apoplastic movement of water occurs exclusively through the cell wall without crossing any membranes.
II. Solutes present in a cell (or in any solution) increase the free energy of water or water potential.
III. The symplastic movement occurs from cell to cell through the plasmodesmata. IV.Membrane permeability depends on the membrane composition, as well the chemical nature of the solute.
I and II only
II and Iv only
I, III and IV only
I, II and IV only
The water available to plants for absorption is
Gravitational water
Hygroscopic water
Capillary water
Chemically bound water
Which of the following statements is/are true?
I. The apoplastic movement of water occurs exclusively through the cell wall without crossing any membranes.
II. Solutes present in a cell (or in any solution) increase the free energy of water or water potential.
III. The symplastic movement occurs from cell to cell through the plasmodesmata. IV.Membrane permeability depends on the membrane composition, as well the chemical nature of the solute.
I and II only
II and Iv only
I, III and IV only
I, II and IV only
The correct relationship among different type of soil water is
Capillary Water > Gravitational Water > Hygroscopic Water > Chemically combined Water
Gravitational Water > Capillary Water > Hygroscopic Water > Chemically combined Water
Hygroscopic Water > Capillary Water > Gravitational Water > Chemically combined Water
Chemically combined Water > Hygroscopic Water > Gravitational Water > Capillary Water
The term apoplast signifies
Cell wall, intercellular space and water filled channel
Protoplasts inter connected by plasmodesmata
Cell wall, cytoplasm and central vacuole
None of the above
In which of the following path, flow of water occurs from cell to cell through their protoplasm?
Apoplast pathway
Symplast pathway
Both (a) and (b)
Transmembrane pathway
Which of the following statements is/are not true?
I.In CAM plants, stomata open during dark and remain closed during the day. II.Role of in stomatal opening is now universally accepted.
III.The water potential of root cells is higher than the water potential of soil. IV.Capillarity theory is the most accepted theory of water movement through plants. V.The walls of xylem vessels made up of lingo-cellulose have strong affinity for water molecules.
I and II
III, IV and V
I, III and V
II, III and IV
Tension, one of the important factor in the movement of xylem sap in a tree is a result of
Cohesive nature of water
Capillary size of xylem tube
Transpiration at the leaf surface
All at the above
