Selina solutions for Concise Biology [English] Class 10 ICSE chapter 5 - Transpiration [Latest edition]

The process of evaporative loss of water from the aerial parts of a plant is ______.

The process of oozing out of the fluids from a plant part is ______.

Transpiration occurs:

Guttation takes place through:

The apparatus used to measure the rate of transpiration is ______.

Which of the following is an external factor affecting the rate of transpiration?

The upper layer of mesophyll in a leaf consists of elongated ground tissue called ______.

Transpiration is significant for all except ______.

Hydathodes are located on ______.

When guard cells are flaccid, the stoma must be ______.

Name the following:

openings on the stem through which transpiration occurs.

Name the following: 

The process by which the intact plant loses water in the form of droplets. 

Name the following:

An instrument used to find the rate of transpiration.

Name the following:

A plant in which the stomata are sunken 

Name the following:

The apparatus to record the rate of transpiration in a cut shoot. 

Name the following:  

Any two parts of a leaf which allow transpiration.

Name the following:

The structure in a leaf that allows guttation.

Name the following:

Loss of water as droplets from the margins of certain leaves. 

Transpiration is the loss of water as water ______ from the ______ parts of the plant.

Closing of ______ and shedding of leaves reduce ______.

Transpiration helps in creating ______ force and in eliminating excess ______.

Given below is an example of a certain structure and its special functional activity:

Chloroplasts and Photosynthesis

In a similar way, write the functional activity against the following:

Hydathodes and ______

Given below is an example of a certain structure and its special functional activity:

Chloroplasts and photosynthesis

In a similar way, write the functional activity against the following: 

Leaf spines and ______

Given below is an example of a certain structure and its special functional activity:

Chloroplasts and Photosynthesis

In a similar way, write the functional activity against the following:

Lenticels and ______

Given below is an example of a certain structure and its special functional activity:

chloroplasts and photosynthesis

In a similar way, write the functional activity against the following:

Xylem and ______

(a) State whether the following statement are True or False.

(b) Rewrite the false statement in the correct form by changing either the first or the last word only.

Most transpiration occurs at midnight.

(a) State whether the following statement are True or False.

(b) Rewrite the false statement in (a) above in the correct form by changing either the first or the last word only.

Transpiration creates a pull for the upward movement of the sap.

(a) State whether the following statement are True (T) or False (F)

(b) Rewrite the false statement in (a) above in the correct form by changing either the first or the last word only.

Wind velocity has an effect on transpiration.

(a) State whether the following statement are True or False.

(b) Rewrite the false statement in (a) above in the correct form by changing either the first or the last word only.

Atmospheric humidity promotes transpiration from a green plant.

(a) State whether the following statement are True or False.

(b) Rewrite the false statement in the correct form by changing either the first or the last word only.

Transpiration helps to cool the body of the plant.

Match the terms given in column A with column B:

Name the three kinds of transpiration.

Name the three external factors which increase the rate of transpiration.

Name the three intrinsic features which reduce the rate of transpiration.

Name three extrinsic factors which decrease the rate of transpiration.

Name four kinds of potometers on the basis of the names of the scientists who discovered them.

Define the following Term:
Transpiration

Define the following term:

Exudation

Define the following term:

Potometer

Define the following term:

Wilting

Define the following term:

Hydathodes

Define the following term:

Cuticle

Distinguish between the following:
Stomata and lenticels

Differentiate between guttation and bleeding in plants.

Distinguish between the following:
Transpiration and evaporation

Give a reason/suitable explanation.

Nerium loses less amount of water during transpiration.

Give a reason/suitable explanation.

More transpiration occurs from the under surface of a dicot leaf.

Give a reason/suitable explanation.

Transpiration increases with the velocity of the wind.

Give a reason/suitable explanation.

Leaves of some plants wilt during midday and recover in the evening.

Give a reason/suitable explanation.

Guttation normally occurs during early mornings or late nights.

Give a reason/suitable explanation.

Forests tend to bring more rains.

The given figure represents an experiment:

1. Leaf A was coated with grease on both surfaces.
2. Leaf B was coated with grease on the lower surface.
3. Leaf C was coated with grease on the upper surface.
4. Leaf D was left without any application of grease. All four leaves A, B, C and D were left in a room for about 24 hours.
   1. Which leaf dries first? Give reason.
   2. Which leaf dries last? Give reason.

Given below is the diagram of an apparatus used to study a particular phenomenon in plants:

1. Name the apparatus.
2. What is it used for?
3. What is the role played by the air-bubble in this experiment?
4. What is the use of the reservoir?
5. What happens to the movement of the air-bubble if the apparatus is kept:
   1. in the dark
   2. in sunlight
   3. in front of a fan?
      Give a reason in each case.

Given ahead is a diagram of an experimental setup to study the process of transpiration in plants. Study the same and then answer the question that follows:

1. Name the colour of dry cobalt chloride paper.
2. Is the experimental leaf a monocot or a dicot? Give a reason to support your answer.
3. Why are glass slides placed over the dry cobalt chloride papers?
4. After about half an hour, what change, if any, would you expect to find in the cobalt chloride paper placed on the dorsal and ventral sides of the leaf? Give a reason to support your answer.

An outline sketch of a tree is shown in a diagram below. Study the same and answer the questions that follow:

1. Name and define the phenomenon labelled A in the diagram.
2. Write the significance of the process mentioned in A for the plants.
3. What do the direction of the arrows in B and C indicate? Name the phenomena.
4. Draw a neat and labelled diagram of an opened stomata.

The figure given below represents an experimental setup with a weighing machine to demonstrate a particular process in plants. The experimental set-up was placed in bright sunlight. Study the diagram and answer the following questions:

1. Name the process intended for the study.
2. Define the above mentioned process.
3. When the weight of the test tubes (A and B) is taken before and after the experiment, what is observed? Give reasons to justify your observations in A & B.
4. What is the purpose of keeping the test tube B in the experimental set-up?
5. What is the purpose of putting oil in the test tube?

An apparatus, as shown below, was set up to investigate a physiological process in plants. The setup was kept in sunlight for two hours. Droplets of water were then seen inside the bell jar. Answer the questions that follow:

1. Name the process being studied.
2. Explain the process named above in Q.3(a)(i).
3. Why was the pot covered with a plastic sheet?
4. Suggest a suitable control for this experiment.
5. Mention two ways in which this process is beneficial to plants.
6. List three adaptations in plants to reduce the above mentioned process.

Given below is the figure of a stoma. Study the same and answer the following questions:

1. Label the guidelines A and B.
2. Write the exact location of the above-mentioned structures.
3. Mention one important role of structure A.
4. Write three important roles for structure B.
5. Redraw the same figure when structures A are in flaccid condition. When does the flaccid condition occur?