Mark the statements true (T) or false (F).
A. Less than 1 percent of water reaching the leaves is used in photosynthesis and plant growth.
B. Cellulose microfibrils of guard cells are oriented longitudinally, making it easier for the stoma to open.
C. Transpiration can create pressure sufficient to lift a xylem sized column of water over 130 metres high.
D. C4 plants lose only half as much water as a C3 plant for the same amount of CO2 fixed.
A B C D
1. F T F T
2. F T F F
3. T F T T
4. T F F T
How many are associated with apoplastic movement of water?
1. Through cell wall
2. Through intercellular space
3. Through plasmodesmata
d. Through xylem
1. a, b, & d
2. b, c & d
3. a, c & d
4. a, b & c
Identify the incorrect match
Property | Simple Diffusion |
Facilitated Transport |
Active Transport |
a. Requires special membrane proteins | No | Yes | Yes |
b. Highly selective | No | Yes | Yes |
c. Transport saturates | No | No | Yes |
d. Uphill transport | No | Yes | Yes |
e. Requires ATP energy | No | No | Yes |
1. c & d
2. a, c, & d
3. c, d & e
4. b, c & d
Select the correct statement:-
1. Pure water has minimum
2. Pure water has maximum
3. Pure water has maximum DPD
4. Pure water has variable DPD
Which one of the following is incorrect regarding faciliated diffusion :-
(1) Selective nature
(2) Dependent on energy
(3) Transport Saturation
(4) Requirement of protein
Which protein is responsible for active transport:-
1. Pump
2. Channel
3. Symport
4. Uniport
Which is not correct with transporting the food through phloem?
1. Loading is a passive process
2. Translocation is due to hydrostatic force
3. Food translocation is bidirectional
4. Translocation always occur from source to sink
Movement of water and mineral in cell wall & intercellular space is called as:-
1. Symport
2. Antiport
3. Symplast
4. Apoplast
ln above diagram A is having :-
(1) Hypotonic solution
(2) Hypertonic solution
(3) Low w
(4) Both B & C correct
Main factor deciding rate of diffusion is :-
1. Pressure/concentration gradient
2. Solubility of gases
3. Thickness of diffusion membrane
4. Posture of body