Stomata opens:

(1) in day time - for gaseous exchange

(2) in day time - no gaseous exchange

(3) in night time only - for gaseous exchange

(4) in night time only - no gaseous exchange

Subtopic:  Transpiration & Guttation |
 85%
From NCERT
AIIMS - 2001
To view explanation, please take trial in the course.
NEET 2023 - Target Batch - Aryan Raj Singh
Hints
Links
To view explanation, please take trial in the course.
NEET 2023 - Target Batch - Aryan Raj Singh

If turgor pressure becomes equal to the wall pressure, then

1. water leaves the cell

2. water enters the cell

3. no exchange of water takes place

4. solute goes from the cell into water.

Subtopic:  Plant Water Relations: Water Potential: DPD |
 87%
AIIMS - 2002
To view explanation, please take trial in the course.
NEET 2023 - Target Batch - Aryan Raj Singh
Hints

Which of the following helps in ascent of sap?

(1) Root pressure

(2) Transpiration

(3) Capillarity

(4) All of these

Subtopic:  Ascent of Sap |
 83%
From NCERT
AIIMS - 2007
To view explanation, please take trial in the course.
NEET 2023 - Target Batch - Aryan Raj Singh
Hints
Links
To view explanation, please take trial in the course.
NEET 2023 - Target Batch - Aryan Raj Singh

What do A, B, C and D represent in the following figure?

(1) A : carrier protein, B : symport, C : uniport, D : antiport

(2) A : carrier protein, B : uniport, C : antiport, D : symport

(3) A : carrier protein, B : antiport, C : symport, D : uniport

(4) A : carrier protein, B : uniport, C : symport, D : antiport

Subtopic:  Diffusion |
 89%
From NCERT
AIIMS - 2010
To view explanation, please take trial in the course.
NEET 2023 - Target Batch - Aryan Raj Singh
Hints
Links
To view explanation, please take trial in the course.
NEET 2023 - Target Batch - Aryan Raj Singh

What is correct about the movement of substances across the membrane in facilitated diffusion?

1. It is an active transport.

2. It causes the transport of molecules from low concentration to high concentration.

3. It is insensitive to inhibitors.

4. It is a very specific transport.

Subtopic:  Means of Transport: Passive |
 75%
From NCERT
AIIMS - 2010
To view explanation, please take trial in the course.
NEET 2023 - Target Batch - Aryan Raj Singh
Hints
Links
To view explanation, please take trial in the course.
NEET 2023 - Target Batch - Aryan Raj Singh

The water logging capacity of garden soil will be determined by measuring the weight of 

(1) soil by adding water and humus

(2) water saturated soil then heating the soil till it is dry and then measuring the weight of soil

(3) soil by adding water, boimass and humus

(4) soil from different locations with biomass.

 71%
AIIMS - 2017
To view explanation, please take trial in the course.
NEET 2023 - Target Batch - Aryan Raj Singh
Hints

The modified equation for water potential is:

1. Ψw= Ψs + Ψp

2. Ψw = Ψs-Ψp

3. Ψw=Ψs

4. Ψw=Ψp-Ψs

Subtopic:  Water Potential Concept |
 90%
From NCERT
AIIMS - 2017
To view explanation, please take trial in the course.
NEET 2023 - Target Batch - Aryan Raj Singh
Hints
Links
To view explanation, please take trial in the course.
NEET 2023 - Target Batch - Aryan Raj Singh

The value of osmotic potential of an electrolyte is always

(1) more than non-electrolyte 

(2) less than non-electrolyte 

(3) same as non-electrolyte 

(4) None of these

Subtopic:  Osmosis |
 56%
AIIMS - 2016
To view explanation, please take trial in the course.
NEET 2023 - Target Batch - Aryan Raj Singh
Hints

Identify the process taking place in this experiment.

(1) Ringing experiment for translocation of sap

(2) Demonstration of root pressure

(3) Eosin test to demonstrate ascent of sap

(4) Demonstration of transpiration

 

Subtopic:  Phloem Translocation |
 74%
AIIMS - 2015
To view explanation, please take trial in the course.
NEET 2023 - Target Batch - Aryan Raj Singh
Hints

Osmosis is a type of 

(1) imbibition of solution   

(2) diffusion of solvent

(3) evaporation of water   

(4) diffusion of solute

Subtopic:  Osmosis |
 78%
From NCERT
AIIMS - 2014
To view explanation, please take trial in the course.
NEET 2023 - Target Batch - Aryan Raj Singh
Hints
Links
To view explanation, please take trial in the course.
NEET 2023 - Target Batch - Aryan Raj Singh