Transpiration in Plants

Q. 5 Difference between osmosis and diffusion

Q.

Write the difference between transpiration and translocation?

Q. Diffusion involves the movement of only the solute molecules.

1. True
2. False

Q.

How are cohesive and adhesive forces involved in transport of water?

Q. How do the food and water transportation takes place in non vascular organisms like algae or mosses or liverwort etc.?

Q. The transpiration in plants will be lowest when:

1. There is high humidity in the atmosphere.
2. There is excess of water in the cell.
3. The environmental conditions are very dry.
4. The wind velocity is very high.

Q.

Water moves up in very tall plants as well. Which force causes the water to reach such height?

1. Cohesion of water molecules

2. Adhesion of water molecules

3. Transpiration pull

4. Root pressure

Q.

What is osmoregulation? Which organ of the plant body helps in osmoregulation? Hence explain Transpirational Pull. [3 MARKS]

Q.

Of the processes which occur in leaves, the one which may lower their temperature is

1. Respiration

2. Photosynthesis

3. Transpiration

4. Hydrolysis

Q. How would the gaseous exchange or the passage of water inside and outside the cell occur without diffusion or osmosis?

Q. The ascent of xylem sap depends on _______.

1. Cohesion of water molecules

2. Adhesion of water molecules

3. Transpiration pull

4. All of these

Q.

For diffusion or osmosis to take place in root cells, ________ is essential.

1. solute

2. solvent

3. temperature difference

4. difference in solute concentration

Q.

For diffusion or osmosis to take place in root cells, ___ is essential.

1. temperature difference

2. solute

3. solvent

4. difference in solute concentration

Q. Read the following statements and Mark ‘O’ for Osmosis and ‘D’ for Diffusion & choose the correct option below:
A. Gases in roots are taken up and thrown by
B. Water is taken by plasma membrane
C. Water is expelled out of plasma membrane
D. Exchange of gases

1. OODD
2. ODOD
3. DDOO
4. DOOD

Q. how does water move from roots to the leaves of tall trees?

Q.

Fill in the blanks with the right words from the bracket.

The greater the humidity of air, the __________ the rate of transpiration. (greater/lesser)

Q.

Which of the following contributes to the transport of water from the ground to the leaves of a tall tree?

1. Cohesion of water and transpiration pull

2. Capillary rise of water in xylem

3. Breakdown of ATP

4. Root pressure

Q.

Transpiration mainly occurs through ___ .

Q.

Fill in the blank :-

_____________ is a special kind of diffusion in which solution moves across the gradient.

Q.

The transpiration in plants will be lowest

1. When there is high humidity in the atmosphere.

2. High wind velocity.

3. There is excess of water in the cell.

4. Environmental conditions are very dry.

Q.

Define Osmosis. What are the different types of osmosis? Give examples. [5 MARKS]

Q. What are the different types of osmosis? Give examples.

Q.

What causes the water droplet formation at the edge of the leaves as shown in the image below?

1. Transpiration

2. Root pressure

3. Osmosis

4. Diffusion

Q. Fingers become pruney when placed in water for an extended period of time. This is due to:

1. Diffusion
2. Osmosis
3. Difference in temperature
4. Reverse osmosis

Q.

Which structures or parts in the plant body help in transpiration process?

1. Stomata

2. Stem

3. Chloroplasts

4. Mesophyll cells

Q. ___ is the term used for loss of water in vapour form from aerial part of the plants.

Q.

Which of the following contributes most to transport of water from the ground to the leaves of a tall tree?

1. Breakdown of ATP.

2. Cohesion of water and transpiration pull.

3. Capillary rise of water in xylem.

4. Root pressure.

Q.

For diffusion or osmosis to take place in root cells_____is essential.

1. solute

2. solvent

3. difference in solute concentration

4. temperature difference

Q. Define transpiration.

[Review question: Pg. No: 231]

Q. ------- helps in temperature regulation in plants.

1. Transfixion

2. Transpiration

3. Transcedence

4. Translocation