301.
"Osmotic theory" for an active absorption of water was given by A
Thiman
B
O.Hertwig
C
Atkin & Priestley
D
J.C.Bose
Answer :
Atkin & Priestley
View Solution
Discuss Question
No explanation is given for this question. Let's discuss the answer together.
302.
Which of the following is not a feature of active transport of solutes in plants ? A
Requires ATP
B
Occurs against concentration gradient
C
Non-selective
D
Occurs through membranes
Answer :
Non-selective
View Solution
Discuss Question
No explanation is given for this question. Let's discuss the answer together.
303.
Rate of transpiration is measured by A
Manometer
B
Auxanometer
C
Potometer
D
Barometer
Answer :
Potometer
View Solution
Discuss Question
No explanation is given for this question. Let's discuss the answer together.
304.
When stem of a herbaceous plant is cut , water or sap oozes out , this is due to A
Guttation
B
Transpiration pull
C
Root pressure
D
Imbibition
Answer :
Root pressure
View Solution
Discuss Question
No explanation is given for this question. Let's discuss the answer together.
305.
The osmotic pressure of the cell is measured by A
Plasmolysis method
B
Osmometer
C
Molar concentration of the cell sap
D
Deplasmolysis
Answer :
Plasmolysis method
View Solution
Discuss Question
No explanation is given for this question. Let's discuss the answer together.
306.
Stomatal movement is not affected by A
Temperature
B
Light
C
$$C{O_2}$$ concentration
D
$${O_2}$$ concentration
Answer :
$${O_2}$$ concentration
View Solution
Discuss Question
No explanation is given for this question. Let's discuss the answer together.
307.
Plasmolysis can be used for A
Good growth of plants
B
Good growth of weeds
C
Killing the weeds
D
None of the above
Answer :
Killing the weeds
View Solution
Discuss Question
No explanation is given for this question. Let's discuss the answer together.
308.
Apparatus used for measuring the transpiration A
Evapometer
B
Potomerer
C
Osmometer
D
Tensiometer
Answer :
Potomerer
View Solution
Discuss Question
No explanation is given for this question. Let's discuss the answer together.
309.
The root hairs absorb which of the following type of water A
Capillary water
B
Hygroscopic water
C
Gravitational water
D
All of the water
Answer :
Capillary water
View Solution
Discuss Question
No explanation is given for this question. Let's discuss the answer together.
310.
Pressure exerted on the fluid contents of the cortical cells of root by turgidity . Which forces the water in to xylem vessels and upward in to the stem for a certain height is A
Imbibition
B
Root pressure
C
Capillarity
D
Turgor pressure
Answer :
Root pressure
View Solution
Discuss Question
No explanation is given for this question. Let's discuss the answer together.