The value of water potential for pure water is
The value of water potential for pure water is
Options
(a) always positive or more than zero (b) always negative or less than zero (c) always zero (d) variable in different solution
Correct […]
Transport and Nutrition in Plants
The type of transport taking place across biomembranes without the help of
The type of transport taking place across biomembranes without the help of proteins is
Options
(a) facilitated diffusion (b) active transport (c) simple diffusion (d) diffusion via symport
Correct Answer:
simple diffusion
Explanation: […]
The transport of ions up the stem to all parts is through
The transport of ions up the stem to all parts is through
Options
(a) transpiration stream (b) mass flow (c) diffusion (d) active transport
Correct Answer:
transpiration stream
Explanation:
After the ions have […]
The technique of growing plants in water culture is called
The technique of growing plants, in water culture is called
Options
(a) tissue culture (b) ikebana (c) cell culture (d) hydroponics
Correct Answer:
hydroponics
Explanation:
No explanation available. Be the first to write […]
The selective permeability of the plasma membrane allows the cell to maintain
The selective permeability of the plasma membrane allows the cell to maintain a constant internal environment. This has been termed as
Options
(a) osmosis (b) homeostasis (c) imbibition (d) homeolysis
Correct Answer:
homeostasis
The rupture and fractionation do not usually occur in the water column in
The rupture and fractionation do not usually occur in the water column in vessel / tracheids during the ascent of sap because of
Options
(a) lignified thick walls (b) cohension and adhesion (c) […]
The rate of transpiration can be measured with the help of
The rate of transpiration can be measured with the help of
Options
(a) auxanometer (b) refractometer (c) spectrophotometer (d) potometer
Correct Answer:
potometer
Explanation:
Potometer is an instrument or apparatus with the help […]
The process by which water is absorbed by solids like colloids causing them
The process by which water is absorbed by solids like colloids causing them to increase in volume is called
Options
(a) Osmosis (b) plasmolysis (c) imbibition (d) diffusion
Correct Answer:
imbibition
Explanation:
No […]
The principal pathway of water translocation in angiosperms is
The principal pathway of water translocation in angiosperms is
Options
(a) sieve cell (b) sieve tube elements (c) xylem vessel system (d) xylem and phloem
Correct Answer:
xylem vessel system
Explanation:
No explanation […]
The plants face wilting due to use of excessive fertilizers because of
The plants face wilting due to use of excessive fertilizers, because of
Options
(a) exosmosis (b) imbibition (c) endosmosis (d) exosmosis & imbibition & endosmosis
Correct Answer:
exosmosis
Explanation:
Plants face wilting due […]