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Question
Given below is the figure of a stoma. Study the same and answer the following questions:
- Label the guidelines A and B.
- Write the exact location of the above-mentioned structures.
- Mention one important role of structure A.
- Write three important roles for structure B.
- Redraw the same figure when structures A are in flaccid condition. When does the flaccid condition occur?
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Solution
- A-Guard cell, B-Stoma.
- Under the dicot leaf, that is, the abaxial side of the leaf, are two guard cells and a stoma.
- Guard cells support the stomata's opening and closing.
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- Its main purpose is to close and open the leaf pores, therefore exchanging gases.
- It helps remove extra water from leaves.
- It helps with water transpiration monitoring.
RELATED QUESTIONS
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Stomata open during day time because guard cells
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 question that follow:
Why are glass slides placed over the dry cobalt chloride papers?
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 question that follow:
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.
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 do you mean by transpiration?
Differentiate Between Stomata and Hydathodes.
Name the following:
A plant having sunken stomata.
Mark the most appropriate answer in the following:
Stomata open during day and close at night because:
Assertion (A): The loss of excess water from the aerial parts of the plant in the form of water vapor is known as transpiration.
Reason (R): Stomata of the leaf perform transpiration.
The paper used to demonstrate unequal transpiration in a dicot leaf is ______.
Name the following:
The openings on the barks of trees through which transpiration occurs.
