Measurement of Transpiration

What is lenticular transpiration? Mention one major difference between lenticular transpiration and stomatal transpiration. 

Droplets of water may sometimes be seen along the margins of the leaves of a banana plant, growing in wet soil, in the mornings. Are these dew drops? Comment upon your answer.

Which of the following statements are true and which ones are false? Give reason in support of your answer. 

Forest contribute in bringing rains. 

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. 

The apparatus shown here is Ganong's photometer designed to demonstrate unequal transpiration from the two surfaces of a dorsiventral leaf. Before keeping the leaf in between the cups, anhydrous calcium chloride (CaCl₂) contained in two small vials were weighted and placed in both the cups. The ends of the cups were weighted and with corks through which two mercury manometers were connected. After a few hours, CaCl₂ vials were taken out and weighed again.
(i) What is the purpose of keeping CaCl₂ vials inside the cup?
(ii) After a few hours, CaCl₂ vials were taken out and weighed again.
will you except any difference in weight? If so, give reasons.
(iii) What was expect the purpose of using a manometer?
(iv) What do you mean by transpiration?

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

What is the role played by the air-bubble in this experiment?

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

What happens to the movement of the air-bubble if the apparatus is kept:

(i) In the dark

(ii) In sunlight

(iii) In front of a fan

Give a reason in each case.