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Question
Define the following term:
Cuticle
Solution
The epidermis secretes a viscous layer on the surfaces of leaves, which is known as the cuticle. Its primary function is to prevent excessive transpiration, thereby reducing water loss from the leaf surfaces.
RELATED QUESTIONS
The apparatus shown in the following diagram is Garreau’s potometer 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 weighed and placed in both the cups. The ends of the cups were closed with corks through which two mercury manometers were connected. After few hours, CaCl2 vials were taken out and weighed again.
What is the purpose of using a manometer?
Where are stomata generally found?
Explain the Term
Stomatal transpiration
Given below is an apparatus used to study a particular process in plants. Study the same and answer the questions that 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?
Suppose you have a rose plant growing in a pot, how will you demonstrate transpiration in it?
How will you differentiate the different types of transpiration?
Guard cells help in regulating the ______.
Maximum transpiration occurs through ______.
Name the following:
The openings on the barks of trees through which transpiration occurs.
