16 Questions
What is the key difference between gaseous exchange during photosynthesis and respiration in plants?
During respiration, oxygen is taken in, and during photosynthesis, carbon dioxide is taken in
Where does the process of gaseous exchange mainly take place in plants?
In the leaves through minute openings called stomata
What happens to the gases exchanged during photosynthesis and respiration in plants?
They are utilized for different cellular processes
What causes the opening and closing of stomata?
Accumulation of photosynthetic solutes in the guard cells
What type of respiration involves taking in of oxygen and giving out of carbon dioxide in plants?
Aerobic respiration
Which type of cells form the slit-like openings of stomata?
Guard cells
What is the main function of stomata in plants?
To exchange gases with the environment
What causes the decrease in turgidity of the guard cells, leading to the closure of stomata?
Dehydration of the guard cells
Which factor primarily determines the opening and closing of stomata?
Turgidity of the guard cells
What is the role of guard cells in gaseous exchange in plants?
They control the opening and closing of stomata
What is the purpose of using Hydrogen bicarbonate as an indicator in this practical activity?
To measure the amount of carbon dioxide released by the leaves
Why is test tube 2 wrapped with aluminum foil or black paper in this practical activity?
To create a dark environment for the leaf in the test tube
What can be inferred when the Hydrogen bicarbonate indicator in test tube 4 turns magenta?
High oxygen production by the leaf in test tube 4
What effect does sealing the test tubes with wax have on the practical activity?
It creates a controlled environment for photosynthesis
What is the purpose of hanging leaves in test tubes 1, 2, and 4 in this practical activity?
To measure the rate of gaseous exchange in different conditions
What is the significance of using fresh green leaves in this practical activity?
Fresh green leaves have higher chlorophyll content for photosynthesis
This quiz covers the process of gaseous exchange in plants, including the exchange of oxygen and carbon dioxide for respiration and photosynthesis. It also includes the methods of gaseous exchange in both aquatic and terrestrial plants.
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