Main factor deciding rate of diffusion is :-

1. Pressure/concentration gradient

2. Solubility of gases

3. Thickness of diffusion membrane

4. Posture of body 

Subtopic:  Diffusion |
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The process responsible for facilitating loss of water in liquid form from the tip of grass blades at night and early morning is:

1. Root pressure

2. Imbibition

3. Plasmolysis

4. Transpiration

Subtopic:  Transpiration & Guttation |
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ln above diagram A is having :-

(1) Hypotonic solution 

(2) Hypertonic solution 

(3) Low ψw

(4) Both B & C correct

 

 

 

Subtopic:  Plant Water Relations: Plasmolysis |
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Movement of water and mineral in cell wall & intercellular space is called as:-

1. Symport 

2. Antiport

3. Symplast

4. Apoplast

Subtopic:  Pathways of transport |
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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 

Subtopic:  Phloem Translocation: Short Distance Transport |
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Which protein is responsible for active transport:-

1. Pump

2. Channel

3. Symport

4. Uniport

Subtopic:  Means of Transport: Active |
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Which one of the followng is incorrect rearding faciliated diffusion :-

(1) Selective nature

(2) Dependent on energy

(3) Transport Saturation

(4) Requirement of protein

 

Subtopic:  Means of Transport: Passive |
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Select the correct statement:-

1. Pue water has minimum ψω

2. Pure water has maximum ψω

3. Pure water has maximum DPD

4. Pure water has variable DPD

Subtopic:  Water Potential Concept |
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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

Subtopic:  Means of Transport: Active | Means of Transport: Passive |
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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 

Subtopic:  Water Absorption |
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