Advertisements
Advertisements
प्रश्न
Define the following term:
Cuticle
उत्तर
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.
संबंधित प्रश्न
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:
- Name the colour of dry cobalt chloride paper.
- Is the experimental leaf a monocot or a dicot? Give a reason to support your answer.
- Why are glass slides placed over the dry cobalt chloride papers?
- 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.
Given ahead is the diagram of an experimental set up to study the process of transpiration in plants. Study the same and then answer the questions that follow:
Is the experimental leaf a monocot or a dicot? Give a reason to support your answer.
Given below are the diagrams of a certain structure in plants in two conditions.
(i) Name the structure shown.
(ii) Name the parts numbered 1-5.
(iii) What is the most apparent difference between A and B in the structure shown?
(iv) Describe the mechanism which brings about the change in the structure depicted in A and B.
Draw a labeled diagram of the stomatal apparatus and label the following in it: Stoma, Guard cells, Chloroplast, Epidermal cells, and Cell wall.
Complete the following sentence with appropriate word:
Openings found on the undersurface of the dorsiventral leaf are ___________.
State the Location:
Guard cells
Write the functional activity of the following structure:
Stomata
Guard cells help in regulating the ______.
Write a short note on lenticular transpiration.
Give a reason/suitable explanation.
More transpiration occurs from the under surface of a dicot leaf.
