+91-8076753736[email protected]
logo
logo
-->

Transpiration

Question
ICSEENIBI10003406
Wired Faculty App

Given below is an apparatus used to study a particular process in plants. Study the same and answer the questions which follow:

(i) Name the apparatus.

(ii) Mention one limitation of this apparatus.

(iii)Which phenomenon is studied with the help of this apparatus?

(iv)What is the function of the part marked ‘Reservoir’?

(v) What is the role of the air bubble in the experiment? 

Solution

(i) Ganong’s potometer
(ii) A potometer does not measure the water loss by transpiration, but it measures the water uptake by the plant. Water absorbed by the plant is not completely lost by transpiration; some of the water is used for cell activities.
(iii)Transpiration
(iv)The part marked ‘Reservoir’ is used to bring the air bubble to its original position. This is done by releasing some water from the reservoir into the capillary tube.
(v) The movement of the air bubble in the graduated tube gives the volume of water lost in a given time, which is equal to the rate of transpiration of the leafy shoot.

Some More Questions From Transpiration Chapter

Study the diagram given below and answer the following questions:

(i) Name the process being studied in the above experiment.

(ii) Explain the process mentioned in (i) above.

(iii) Why is oil placed over water?

(iv)What do we observe with regard to the level of water when this setup is placed in

(1) bright sunlight, (2) humid conditions and (3) on a windy day?

(v) Mention any three adaptations in plants to overcome the process mentioned in (ii)

Mention the effects of two individuals in a street fight on the following organs by the autonomous nervous system (one has been done for you).


Organ Sympathetic nervous system Para-sympathetic nervous system
eg Lungs  Dilates bronchi and brochioles contricts bronchi and bronchioles

 
1) Heart 

2 Pupils of the eye

3 . Salivary 		    

(ii) List four major activities of the Red Cross.

Name the following:

(ii) A plant with sunken stomata.

There are five sets consisting offive terms given below. In each set, there is a word
which is an odd one. For each of these sets, write down the category of the group
having identified the odd one out, as shown in the example:

Example: (0) cell wall, vacuole, centrosome, plastids, mitochondria

S.no  Category  Odd one
0 Organelles of plant cell 

Centrosome

(i) Blinking, Knitting without looking, Smiling, Blushing, Crying

Choose the correct answer to the following statements out of the three choices given
after each statement.

Loss of water as droplets from hydathodes is called

Account for the following:

(iii)The leaves of certain plants roll up on a bright sunny day.

Identify and name the following processes/terms from the statements given below:

(iv)The loss of water from InJured parts of a plant.

Mock Test Series

Mock Test Series

NCERT Sample Papers

Entrance Exams Preparation