Transpiration

Q. Transpiration and root pressure cause water to rise in plants by pulling and pushing it respectively.

1. True
2. False

Q.

How will you show with an activity that transpiration occurs through leaves?

Q. Loss of water in the form of water vapour from the aerial parts of the plant is called ____.

1. photosynthesis
2. transpiration
3. osmosis
4. respiration

Q.

How does transpiration pull help in the absorption of water by plants?

Q. ______ helps in temperature regulation in plants.

1. Transfixion

2. Transpiration

3. Translocation

4. Transcedence

Q. Stomata are surrounded by __ .

1. chloroplasts
2. guard cells
3. stoma
4. pores

Q. Transpiration mainly occurs through ________ .

1. flowers
2. roots
3. shoots
4. leaves

Q.

How can tall plants transport water from root to shoot?

Q.

The diagram shows how water is lost from a leaf.

By which process is the water lost?

1. Transpiration

2. Photosynthesis

3. Osmosis

4. Translocation

Q.

The opening and closing of pores is a function performed by

1. Stomata

2. Chlorophyll

3. Chloroplast

4. Guard cells

Q.

Do Lenticels contribute to transpiration?

Q.

Opening and closing of pores is a function performed by

1. Stomata

2. Chlorophyll

3. Chloroplast

4. Guard cell​

Q.

Loss of water as droplets from hydathodes is called ________.

1. Transpiration

2. Bleeding

3. Guttation

4. Evaporation

Q. In plants, diffusion is the only process that aids in transportation of water and minerals.

1. True
2. False

Q. Choose the correct statements related to respiration in plants.

1. In leaves, the exchange of gases takes place via stomata by the process of diffusion.
2. If stems are woody, gaseous exchange is carried out by lenticels.
3. In plants, respiration takes through nodes.
4. Plants do not respire.

Q.

Water is lost by plants through a process called translocation.

1. True
2. False

Q. Assertion (A): Plants do not require active pumping system like heart for transportation.

Reason (R): Forces like osmosis, root pressure and transpiration pull help in transportation of substances in plants.

1. A is true but R is false.
2. R is true but A is false.
3. Both A and R are true and R is the correct explanation of A.
4. Both A and R are true but R is not the correct explanation of A.

Q.

Does transpiration occur in all plants?

Q.

Question 37
If a potted plant is covered with a glass jar, water vapour appear on the wall of glass jar. Explain why?

Q. Define transpiration. (2 Marks)

Q.

Transpiration takes place only in aerial parts of the plant.

1. True
2. False

Q.

Does transpiration prevent overheating?

Q.

State whether the following statements are true or false.

The loss of water by transpiration is very high when the air becomes very moist

1. True
2. False

Q. How does gaseous exchange takes place in plants?

Q. is responsible for the upward conduction of water and minerals in plants.

1. Phloem
2. Xylem
3. Meristem

Q.

Water absorption through roots can be increased by keeping the plants:

1. In the shade.

2. Under the fan.

3. Covered by a polythene bag.

4. In dim light.

Q. Directions: Choose the correct option:​
Assertion (A): Guttation occurs throughout the day in plants. ​
Reason (R): Stomata have guard cells that open and close and help in transpiration.​

Q.

The diagram of an apparatus given below demonstrates a particular process in plants. Study the same and the questions that follow:

Explain the phenomenon?

Q.

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

1. Chloroplasts

2. Mesophyll cells

3. Stomata

4. Stem

Q. Transpiration acts as a suctional force to pull water from the to the .

1. leaf
2. root
3. bark
4. fruit