18 Questions
What is the main function of xylem in a leaf?
Transporting water into the leaf for photosynthesis
Which leaf adaptation increases the surface area for the diffusion of carbon dioxide and absorption of light for photosynthesis?
Large surface area
What is the role of chlorophyll in photosynthesis?
Absorbing light energy
How does the spongy layer in a leaf contribute to photosynthesis?
Allows carbon dioxide diffusion through the leaf
What is the function of stomata in a leaf?
Allowing carbon dioxide to diffuse into the leaf
Why is the palisade cell layer located at the top of the leaf?
To allow more light to reach palisade cells
Where does the diffusion of carbon dioxide start in photosynthesising cells?
Atmosphere
Which part of the leaf has a protective layer on top to prevent water evaporation?
Upper epidermis
What is the main role of guard cells in the lower epidermis of the leaf?
Absorb and lose water to regulate stomatal opening
Which leaf structure contains tightly packed chloroplasts to maximize photosynthesis?
Palisade mesophyll layer
What is the role of the spongy mesophyll in the leaf?
Increase surface area for gas diffusion
During which time of day do stomata usually open for gas exchange in leaves?
Morning
What is the conclusion drawn from tube A in the gas exchange experiment?
There is a net intake of oxygen by a leaf in light
Which tube serves as the control in the gas exchange experiment?
Tube C with no leaf in light
What does the dark yellow indicator in tube B indicate during the gas exchange experiment?
There is a net intake of carbon dioxide by a leaf in the dark
In the context of the experiment, what does the light red indicator in tube C represent?
There is no gas exchange happening with a leaf in light
What color would you expect the indicator to turn if there was no gas exchange happening with a leaf in light?
Light red
If a tube contains a leaf and has a green indicator, what can be concluded?
The leaf is photosynthesizing effectively
This quiz covers the functions of xylem and phloem in plant vascular tissues, as well as the role of stomata in water transport and photosynthesis. It also explores the distribution of substances in plant leaves to reduce water loss.
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