Description : Grass leaves curl inwards during very dry weather. Select the most appropriate reason from the following. (a) Tyloses in vessels (b) Closure of stomata (c) Flaccidity of bulliform cells (d) Shrinkage of air spaces in spongy mesophyll
Last Answer : (c) Flaccidity of bulliform cells
Description : Differentiate between haemolysis and turgidity. -Biology
Last Answer : answer:
Description : Shrinkage of protoplasm due to outward flow of water (exosmosis) in a concentrate solution.
Last Answer : Ans. Plasmolysis
Description : Cell becomes turgid because of - (1) Plasmolysis (2) Exosmosis (3) Endosmosis (4) Diffusion
Last Answer : (3) Endosmosis Explanation: When the plant cell is placed in a hypotonic solution, it takes up water by osmosis and starts to swell, but the cell wall prevents it from bursting. The plant cell is ... become "turgid" i.e. swollen and hard. So it is because of endosmosis that cell becomes turgid.
Description : Which of the following facilitates opening of stomatal aperture? (a) Decrease in turgidity of guard cells (b) Radial orientation of cellulose microfibrils in the cell wall of guard cells (c) ... microfibrils in the cell wall of guard cells (d) Contraction of outer wall of guard cells
Last Answer : (a) Decrease in turgidity of guard cells
Description : Which of the following facilitates opening of stomatal aperture ? (1) Decrease in turgidity of guard cells (2) Radial orientation of cellulose microfibrils in the cell wall of guard cells (3) Longitudinal ... microfibrils in the cell wall of guard cells (4) Contraction of outer wall of guard cells
Last Answer : (2) Radial orientation of cellulose microfibrils in the cell wall of guard cells
Description : Stomatal opening is based on (1) Exosmosis (2) Endosmosis (3) Plasmolysis in guard cells (4) Decrease in concentration of cell sap
Last Answer : Endosmosis
Description : Cell becomes turgid because of (1) Plasmolysis (2) Exosmosis (3) Endosmosis (4) Diffusion
Description : $ those subtances which reduce the rate of transpiration are called transpirants. ! Imbibition causes Osmotic pressure.
Last Answer : $ those subtances which reduce the rate of transpiration are called transpirants. ! Imbibition causes Osmotic ... D. If both As and R are wrong.
Description : $ Puccinia graminis causes rust disease of wheat. ! Sexual reproduction is absent in fungi imperfecti.
Last Answer : $ Puccinia graminis causes rust disease of wheat. ! Sexual reproduction is absent in fungi imperfecti. A. If ... wrong D. If both As and R are wrong.