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Questions and Answers
Where does intercellular gas exchange take place in a leaf?
Where does intercellular gas exchange take place in a leaf?
- In the stomata
- Between the spongy mesophyll layer (correct)
- Within the palisade layer
- In the guard cells
What causes stomatal opening and closing?
What causes stomatal opening and closing?
- Temperature fluctuations
- Photosynthesis activity
- Water potential of the leaf
- Changes in the turgor of the guard cells (correct)
How do guard cells open the stomata?
How do guard cells open the stomata?
- Due to an increase in carbon dioxide concentration
- By losing water and becoming flaccid
- By absorbing excess oxygen
- By actively accumulating potassium ions (correct)
Where does gas exchange also occur in plants besides leaves?
Where does gas exchange also occur in plants besides leaves?
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How do woody plant stems facilitate gas exchange?
How do woody plant stems facilitate gas exchange?
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What is the main purpose of respiratory systems in animals?
What is the main purpose of respiratory systems in animals?
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How is ventilation defined in the context of breathing?
How is ventilation defined in the context of breathing?
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Why does air enter the lungs during inhalation?
Why does air enter the lungs during inhalation?
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What happens to oxygen when it diffuses into the blood stream?
What happens to oxygen when it diffuses into the blood stream?
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Why does carbon dioxide diffuse from the blood into the alveoli?
Why does carbon dioxide diffuse from the blood into the alveoli?
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