Water logging or over-watering a plant is dangerous and may kill the plant. Why is this so?

1. Water does not have all the necessary minerals a plant needs to grow.
2. Water neutralizes the pH of the soil.
3. The roots are deprived of oxygen.
4. Water lowers the water potential of the roots.

To view Explanation, Please buy any of the course from below.
High Yielding Test Series + Question Bank - NEET 2020

Difficulty Level:


During plasmolysis:

1. Water is lost from the cytoplasm but not from the vacuole

2. Water is first lost from the cytoplasm and then from the vacuole

3. Water is first lost from the vacuole and then from the cytoplasm 

4. Water is lost from the vacuole but not from the cytoplasm 

To view Explanation, Please buy any of the course from below.
High Yielding Test Series + Question Bank - NEET 2020

Difficulty Level:


What is the first step in the germination of a seed?

(1) pollination

(2) fertilization

(3) imbibition

(4) hydrolysis of starch and other food reserves

To view Explanation, Please buy any of the course from below.
High Yielding Test Series + Question Bank - NEET 2020

Difficulty Level:


Which of the following is/are essential for imbibitions to take place?

I. Water potential gradient between the absorbent and the liquid imbibed

II. Affinity between the adsorbent and the liquid

1. Only II

2. Only I

3. Both I and II

4. None

Please attempt this question first.

Difficulty Level:


Consider the following:

I.    A decrease in pressure on cell exerted by the wall
II.   An increase in water potential of the surroundings
III.  The uptake of solutes by the cell
IV.  An increase in the tension on the surrounding solution

Which of these would contribute to the uptake of water by the cell?

1. I, II, III

2. II, III, IV

3. I, II, IV

4. I, III, IV

To view Explanation, Please buy any of the course from below.
High Yielding Test Series + Question Bank - NEET 2020

Difficulty Level:


What is true for both symplast and apoplast movement of water in plants?

1. An equal rate of transport

2. Being down a potential gradient

3. Assistance by cytoplasmic streaming 

4.Conduction through interconnected protoplasts

Please attempt this question first.

Difficulty Level:


Phenyl mercuric acetate (PMA) results in

1. reduced photosynthesis

2. reduced transpiration

3. reduced respiration

4. killing of plants.

To view Explanation, Please buy any of the course from below.
High Yielding Test Series + Question Bank - NEET 2020

Difficulty Level:


Pressure on a plant cell wall caused osmotic movement of water is called:

1. Osmotic pressure

2. Osmotic potential

3. Turgor pressure

4. Hypertonic pressure

Please attempt this question first.

Difficulty Level:


The pericycle, which gives rise to lateral roots, consists of:

1. Epithelial cells

2. Meristematic cells

3. Parenchymal cells

4. Endodermal cells

To view Explanation, Please buy any of the course from below.
High Yielding Test Series + Question Bank - NEET 2020

Difficulty Level:


The most abundant solute in the phloem sap is :
1. Potassium ions
2. Sucrose
3. Glucose
4. Starch

Please attempt this question first.

Difficulty Level: