Due to exosmosis of water
- Aguard cells become turgid
- Bguard cells become dead
- ✓guard cells become flaccid
- Dno change int guard cells occurs
Answer: C.
View full solution →Question types
Absorption by Roots question types
58 questions across 5 question groups — pick any mix to generate a Biology paper with step-by-step answer keys.
58
Questions
5
Question groups
5
Question types
01
MCQ
20 Q→02[2 Mark Question Answer]
10 Q→03Match the following.
1 Q→04[3 marks Question Answer]
12 Q→05Do as Directed.
15 Q→Sample Questions
Absorption by Roots questions
One sample from each question group in this chapter. Select any group above to see the full set with answer keys.
For which of the following, energy is required?
- APassive transport
- BOsmosis
- CDiffusion
- ✓Active transport
Answer: D.
View full solution →Which of the following is false for active transport?
- AIt occurs against concentration gradient.
- ✓It involves movement of ions only.
- CIt is a slow process.
- DIt involves using metabolic energy
Answer: B.
View full solution →Ravi noticed that his potted plant was wilting despite being watered regularly. He suspected that the plant was not absorbing water properly. He added a balanced fertiliser and observed that the plan's condition improved. What was likely the reason for Ravi's plant wilting initially?
- AOverwatering
- BLack of sunlight
- ✓Nutrient deficiency
- DExcess fertiliser
Answer: C.
View full solution →Tonocity is the
- Athe shrinking of a cell through exosmosis where it loose more water
- Bthe stretching of a cell through endosmosis where it cannot accommodate more water
- ✓relative concentration of the solution that determines the inward and outward direction of diffiusion
- Dthe shrinkge of protoplasm when it is kept in high concentrated solution
Answer: C.
View full solution →Differentiate between guttation and bleeding.
Explain the term plasmolysis. Give one application of this phenomenon in our daily life.
Give any two examples of turgor movements in plants.
What is the difference between a flaccid cell and a turgid cell?
What forces are involved in the absorption of water from the soil by root hair?
| Column A | Column B |
| 1. Diffusion | (a) Xylem |
| 2. Semipermeable | (b) Osmosis |
| 3. Diffusion of water | (c) Mixing of molecules |
| 4. Upward flow of water | (d) Cell membrane |
| (e) Cell wall |
Draw a diagram showing opening of stomata.
The diagram given below represents a plant cell after being placed in a strong sugar solution:
(i) What is the state of the cell shown in the diagram?
(ii) Name the structure that acts as a selectively permeable membrane.
(iii) How can the above cell be brought back to its original condition? Mention the scientific term for the recovery of the cell.
(i) What is the state of the cell shown in the diagram?
(ii) Name the structure that acts as a selectively permeable membrane.
(iii) How can the above cell be brought back to its original condition? Mention the scientific term for the recovery of the cell.
Given diagram represents an apparatus set-up to study a very important physiological process.
(i) Name the process being studied.
(ii) Explain the process.
(iii) What change would you observe in the thistle funnel containing sugar Thistle Funnel solution after about 10 minutes?
(i) Name the process being studied.
(ii) Explain the process.
(iii) What change would you observe in the thistle funnel containing sugar Thistle Funnel solution after about 10 minutes?
Given below are diagrams of plant cells as seen under the microscope after having been placed in two different solutions :
(i) What is the technical term for the condition of the following?
(a) Cell A
(b) Cell B
(ii) From the solutions given in brackets (water, strong sugar solution, $1 \%$ salt solution) name the solution into which :
(a) Cell A
(b) Cell B, was placed before being viewed under the microscope,
(iii) Under what conditions in the soil will the root hair cell resemble:
(a) Cell A
(b) Cell $B$
View full solution →(i) What is the technical term for the condition of the following?
(a) Cell A
(b) Cell B
(ii) From the solutions given in brackets (water, strong sugar solution, $1 \%$ salt solution) name the solution into which :
(a) Cell A
(b) Cell B, was placed before being viewed under the microscope,
(iii) Under what conditions in the soil will the root hair cell resemble:
(a) Cell A
(b) Cell $B$
What is the significance of osmosis? Explain in brief.
Name the following
The tissue through which the ascent of sap takes place in plants
The tissue through which the ascent of sap takes place in plants
Name the following
The process that occurs in plants when the root pressure is high and transpiration is low
The process that occurs in plants when the root pressure is high and transpiration is low
Name the following
The pressure exerted by the cell wall to balance the torgor pressure
The pressure exerted by the cell wall to balance the torgor pressure
Name the following
The process by which plants lose water
The process by which plants lose water
Nmae the following
The fraction of soil water neadily available to plants
The fraction of soil water neadily available to plants
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