Read the following statement and choose the correct one from the codes given below
I. The apoplastic movement of water takes place exclusively through intercellular spaces and cell wall without crossing any membrane
II. Symplastic movement occurs from cell to cell through plasmodesmata, ., adjacent cells are connected through plasmodesmata
III. Permeability of a membrane depends on its composition and chemical nature of the solute
IV. Solutes present in a cell increases the free energy of the water or water potential
I, II and III
I, II and IV
II and IV
I and IV
Related Questions
Which theory is considered best to explain ascent of sap
Bulk flow system
Transpiration pull
Transpiration
Root pressure theory
Root pressure is highest during:
Day
Night
Midday
Afternoon
Read the following statement and choose the correct one from the codes given below
I. The apoplastic movement of water takes place exclusively through intercellular spaces and cell wall without crossing any membrane
II. Symplastic movement occurs from cell to cell through plasmodesmata, ., adjacent cells are connected through plasmodesmata
III. Permeability of a membrane depends on its composition and chemical nature of the solute
IV. Solutes present in a cell increases the free energy of the water or water potential
I, II and III
I, II and IV
II and IV
I and IV
Why all the minerals present in soil can not be passively absorbed by roots?
Mineral existence as ions is more than absorption
Due to less concentration of ion in root interior than soil
Due to more concentration of ions in root interior than in soil
None of the above
How much percentage of absorbed water in plants is used in the process of photosynthesis?
Less than 1%
10-20%
50-60%
90-95%
Both minerals and water are absorbed by
Zone of elongation in root
Growing point in root
Root hair zone
Zone of mature cells
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
Root endodermis has the ability to actively transport ions …A… because of …B… . Choose the correct pair
into the xylem; presence of Casparian strip
into the cortex; presence of Casparian strip
into the cortex; absence of Casparian strip
into the xylem; absence of Casparian strip
The Casparian strip in the endodermis is primarily made of:
Lignin
Cellulose
Suberin
Pectin
Why is active transport considered important?
Because material is transported from higher concentration to lower concentration
Because material is transported from lower concentration to higher concentration
Because it increases diffusion coefficient
Because it does not use ATP
