If cohesion-tension transpiration theory is correct then a break in water column in xylem vessels :

1. should cause the mesophyll cells to become flaccid and result in wilting of leaves.

2. should increase the water contents of leaves

3. shouls have no effect at all

4. should increase the rate of photosynthesis.

Subtopic:  Ascent of Sap |
 68%
To view explanation, please take trial in the course.
NEET 2023 - Target Batch - Aryan Raj Singh
Hints

Which one is not related to transpiration?

1. Bleeding

2. Circulation of water

3. Absorption and distribution of mineral salts

4. Regulation of plant body temperature.

Subtopic:  Transpiration & Guttation |
 80%
From NCERT
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

A plasmolysed cell can be deplasmolysed by placing it in :

1. Pure water or hypotonic solution

2. Hypertonic solution

3. Isotonic solution

4, Saturated solution

Subtopic:  Plasmolysis |
 84%
From NCERT
Please attempt this question first.
Hints
Please attempt this question first.

If alcohol treated cell is kept in hypertonic solution it:

1. Bursts

2. Plasmolysed

3. Remains same

4. None

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

The loss of water through cuticle may reach upto :

1. 5%

2. 10%

3. 20%

4. 40%

Subtopic:  Transpiration & Guttation |
 53%
To view explanation, please take trial in the course.
NEET 2023 - Target Batch - Aryan Raj Singh
Hints

Dry wooden stakes, if driven into a small crack in a rock and then soaked, can develop enough pressure to split the rock. Such a pressure is built up through the phenomenon of :

1. Imbibition

2. Buttress roots

3. Prop roots

4. Turgor pressure

Subtopic:  Imbibition |
 90%
From NCERT
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 cohesive force existing between molecules of water is contributing to :

1. ascent of sap

2. translocation

3. plasmolysis

4. osmosis.

Subtopic:  Ascent of Sap |
 84%
From NCERT
Please attempt this question first.
Hints
Please attempt this question first.

To initiate cell plasmolysis, the salt concentration must be :

1. isotonic

2. hypertonic

3. hypotonic

4. atonic

Subtopic:  Plant Water Relations: Plasmolysis |
 89%
From NCERT
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

Ascent of sap is mainly attributed to :

1. cohesion force

2. imbibition

3. root pressure

4. capillarity

Subtopic:  Ascent of Sap |
 67%
From NCERT
Please attempt this question first.
Hints
Please attempt this question first.

Solution concentration is higher in the external solution. The solution is

1. Isotonic

2. Hypotonic

3. Hypertonic

4. None of the above.

Subtopic:  Plant Water Relations: Plasmolysis |
 82%
From NCERT
Please attempt this question first.
Hints
Links
Please attempt this question first.