In hypertonic solution, the water potential of a cell
Options
(a) decreases (b) increases (c) first increases and then decreases (d) doesn’t change
Correct Answer:
decreases
Explanation:
No explanation available. Be the first to […]
If a cell increases in volume when kept in a solution the solution must be
Options
(a) hypotonic (b) hypertonic (c) isotonic (d) none of these
Correct Answer:
hypotonic
Explanation:
No explanation available. Be […]
If flowers are cut and dipped in dilute NaCl solution,
Options
(a) transpiration is low (b) endosmosis occurs (c) no bacterial growth takes place (d) absorption of solute inside flower cell takes place
Correct […]
Hydroponics – Select the right answer
Options
(a) growing plants without soil (b) growing plants in water (c) growing plants without organic matter (d) All are correct
Correct Answer:
All are correct
Explanation:
No […]
How would you differentiate between apoplast and symplast?
Options
(a) Apoplast relies on active transport (b) Symplast deals in non-living spaces and cell walls (c) Apoplast prevents passive diffusion (d) Apoplasts deals in non-living […]
Transpiration and root pressure cause water torise in plants by :
Options
(a) Pulling and pushing it, respectively (b) Pushing it upward (c) Pushing and pulling it, respectively (d) Pushing it upward
Correct Answer: […]
Roots play insignificant role in absorption of water in :
Options
(a) Pistia (b) Pea (c) Wheat (d) Sunflower
Correct Answer:
Pistia
Explanation:
Pistia a hydrophyte plant where absorption of water by root is […]
Root pressure develops due to :
Options
(a) Low osmotic potential in soil (b) Passive absorption (c) Increase in transpiration (d) Active absorption
Correct Answer:
Active absorption
Explanation:
Active absorption creates root pressure. In […]
A column of water within xylem vessels of tall trees does not break under its weight because of:
Options
(a) Tensile strength of water (b) Lignification of xylem vessels (c) Positive root pressure (d) […]
A plasmolysed cell can be deplasmolysed by placing it in
Options
(a) isotonic solutions (b) saturated solution (c) pure water or hypotonic solution (d) hypertonic solution
Correct Answer:
pure water or hypotonic solution
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