Turgid, Flaccid and Plasmolysed

Q.

How is movement of leaves of touch me not plant and movement of plant towards light different ? (3 points)

Q.

Space between the cell wall and plasma membrane in a plasmolysed cell is filled with _______.

1. water

2. isotonic solution

3. hypertonic solution

4. fluid plasma

Q. The cell becomes flaccid when it is placed in a ____ solution.

1. turgid
2. hypertonic
3. hyportonic
4. isotonic

Q. What is stomatal aperture?

Q.

Why do crops get killed when excess fertiliser is added to the soil?

1. Excess fertiliser makes the solution around the cells hypertonic and therefore lots of water enters the root hair cells, thereby making the cells turgid.

2. Excess fertiliser makes the solution around the cells hypotonic and therefore lots of water enters the root hair cells, thereby making the cells turgid.

3. Excess fertiliser makes the solution around the cells hypertonic and therefore lots of water leaves the root hair cells, thereby causing the cells to become plasmolysed.

4. Excess of anything is bad!

Q.

Shrinkage of cytoplasm and the cell membrane from the cell wall is called ___ .

Q.

The condition opposite to turgid is ___ .

Q.

A plasmolysed cell can be deplasmolysed by placing it in

1. Hypertonic solution.

2. Isotonic solution
   

3. Saturated solution
   

4. Pure water or hypotonic solution
   

Q.

Explain why :

Plants begin to die when excess of soluble fertilisers are added to the soil.

Q.

Define the following terms:

(c) Plasmolysis

Q. Given below is the diagram of a plasmolysed cell kept in a hypertonic solution. The space between the shrunken protoplast and the cell wall marked by the letter A contains ______.

1. hypertonic solution
2. air
3. cell sap
4. pure water

Q. What is the absolute configuration (R , S ) of erythrose ?

Q. The condition opposite to swollen cell is known as ___ .

1. turgid
2. plasmolysed
3. deplasmolysed
4. flaccid

Q.

Folding of leaves in the mimosa plant and growth of plant towards light are examples of tropic movements. Do you agree? Why or why not?

Q.

The reverse of plasmolysis is

1. Diffused state

2. Tonicity

3. Deplasmolysis

4. Replasmolysis

Q. Transpiration leads to an increase in the osmotic pressure in the leaf cells.

1. False
2. True

Q.

Swelling of wooden doors during rainy season is due tothe

1. Endosmosis

2. Deplasmolysis

3. Capillarity

4. Imbibition

Q.

The stomatal aperture which is surrounded by guard cells opens when these cells are ___

1. Flaccid

2. Tugid

3. Turned inward

4. Pushed outward

Q. Write three points of difference between nastic and tropic movements in plants.

Q. Write three points of difference between Nastic and tropic movements in plants.

Q. Cell turgidity is caused by

1. Endosmosis
2. Exosmosis
3. Plasmolysis
4. Diffusion

Q. Transportation in plants is carried out by a .......... system.

Q.

Two examples of turgor movements in plants.

Q. Turgor pressure becomes equal to wall pressure then

1. Water leaves the cell
2. No exchange of water takes place
3. Water enter the cell
4. Solutes goes from the cell into water

Q.

Q. In some plants, the leaves droop down during day, while become normal during night

1. Permanent wilting
2. Both A and B
3. Due to temporary wilting
4. None of the above

Q. Accumulation of $K^{+}$ ions in guard cells shall cause

1. Loss of turgidity
2. Decrease in water potential
3. Increase in water potential
4. Exosmosis

Q. What will be observed when a plant or animal cell is put in a hypertonic solution?

1. Cell swells
2. Cell shrinks
3. None of these
4. Cell bursts

Q. Given below is the diagram of a plasmolysed cell kept in a hypertonic solution. The space (marked by the letter A) between the shrunken protoplast and the cell wall contains

1. air
2. hypotonic solution
3. hypertonic solution
4. isotonic solution

Q. What is the utility of plasmolysis?