Types of Transpiration

Q. Given below is an experimental set-up to demonstrate a particular process. Study the same and answer the questions that follow: [5 MARKS]



(a) Name the physiological process being studied.
(b) Explain the process mentioned above.
(c) What is the aim of the above experiment?
(d) What would you observe in the experimental set-up after an hour? Give reason to support your answer.
(e) Mention any three adaptations found in plants to overcome the physiological process mentioned in (a) above.

Q. Which type of tissue is present in leaf petiole?

Q.

Water is lost in a liquid state in some plants through hydathodes. These hydathodes

1. Do not show any specificity in opening and closing

2. Remain closed during the day

3. Remain closed at night

4. Always remain open

Q.

Name the following.
The permanently open structure is seen on the bark of an old woody stem.

Q. How will you differentiate the different types of transpiration?

Q. Lenticels and hydathodes are small pores with which of the following common attributes?

1. They allow exchange of gases
2. Their opening and closing is not regulated
3. They always remain closed
4. They are found on the same organ of plants

Q. Which of the following row(s) is/are correctly matched?
$\begin{array}{ccc}\text{Column A}& \text{Column B}& \text{Column C}\\ \left(a\right)\text{Lenticels}& \left(i\right)\text{Gaseous exchange}& \left(1\right)\text{Carbon dioxide}\\ \left(b\right)\text{Chloroplast}& \left(ii\right)\text{Photosynthesis}& \left(2\right)\text{Glucose}\\ \left(c\right)\text{Leaves}& \left(iii\right)\text{Transpiration}& \left(3\right)\text{Oxygen}\\ \left(d\right)\text{Roots}& \left(iv\right)\text{Diffusion}& \left(v\right)\text{Nutrients}\end{array}$

1. a-i-1
2. b-ii-2
3. c-iii-3
4. d-iv-4

Q. ______ are small pores on the surface of woody stems which help in gaseous exchange.

1. Spiracles
2. Tracheae
3. Stomata
4. Lenticels

Q. Which among the following statements are true?

1. Lenticles perform functions similar to stomata.
2. Chlorophyll pigment captures sunlight.
3. Transpiration helps in absorption of water from soil.
4. Roots are the organ for transpiration.

Q. Where are Hydathodes located on the leaf?

Q. Match the type of transpiration with the region where it happens.

1. Pores on the leaves
2. Waxy layer on leaves
3. Opening in stem