10 Questions
Where does intercellular gas exchange take place in a leaf?
Between the spongy mesophyll layer
What causes stomatal opening and closing?
Changes in the turgor of the guard cells
How do guard cells open the stomata?
By actively accumulating potassium ions
Where does gas exchange also occur in plants besides leaves?
Stems and roots
How do woody plant stems facilitate gas exchange?
Through lenticels
What is the main purpose of respiratory systems in animals?
Remove carbon dioxide from cells
How is ventilation defined in the context of breathing?
The mechanics of breathing in and out
Why does air enter the lungs during inhalation?
To lower the air pressure in the lungs
What happens to oxygen when it diffuses into the blood stream?
It diffuses out of the capillary and into cells
Why does carbon dioxide diffuse from the blood into the alveoli?
Due to a higher concentration of carbon dioxide in the blood compared to the lungs
Learn about how plants respire and exchange gases through the process of intercellular gas exchange, involving stomata and guard cells. Explore how turgor pressure affects stomatal opening and closing, and the role of guard cells in regulating this process.
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