Absorption of water by the plant cells by surface attraction is called: (a) Diffusion (b) Osmosis (c) Imbibition (d) Endosmosis

A plant cell placed in a certain solution got plasmolysed. What was the kind of solution? (a) Isotonic sugar solution (b) Hypotonic salt solution (c) Hypertonic salt solution (d) Isotonic salt solution

The state of a cell in which the cell wall is rigid and stretched by the increase in volume due to the absorption of water is called. (a) Flaccidity (b) Turgidity (c) Capillarity (d) Tonicity

Which one of the following is a characteristic NOT related with the suitability of the roots for absorbing water? (a) Tremendous surface area (b) contain cell sap at a higher concentration than the surrounding soil water (c) Root hairs have thin cell walls (d) Grow downward into the soil

Movement of molecules of a substance from the region of their higher concentration to the region of their lower concentration without the involvement of a separating membrane, is called (a) Osmosis (b) Diffusion (c) active transport (d) Capillarity

Osmosis and diffusion are the same except that osmosis there is: (a) a freely permeable membrane (b) a cell wall in between (c) a selectively permeable membrane in between (d) an endless inflow of water into a cell

The highest water potential (capacity to move out higher concentrated solution) is that of

Pure water (b) 10% salt solution (c) Honey (d) 50% sugar solution

The space between the cell wall and plasma membrane in a plasmolysed cell is filled with. (a) isotonic solution (b) hypotonic solution (c) Hypertonic solution (d) water

What is responsible for guttation? (a) Osmotic pressure (b) Root pressure (c) suction pressure (d) Capillarity

The most appropriate characteristic of a semipermeable membrane is that (a) it has minute pores (b) it has no pores (c) it allows the solute to pass through but not the solvent (d) it allows a solvent to pass through freely but prevents the passage of the solute.

Name the following: