Questions and Answers
What are stomata?
How do guard cells affect stomata?
They open and close the stomata.
What happens to stomata at night?
They close.
What is the primary function of stomata?
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The majority of stomata are found on the __________ of the leaf.
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Stomata are only found on the upper surface of leaves.
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What triggers stomata to open during the day?
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What are the four functions of leaves?
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What is the purpose of having stomata?
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Study Notes
Stomata Overview
- Stomata are small openings on the leaf surface surrounded by guard cells containing chloroplasts, facilitating gas exchange.
- Found in large numbers, stomata contribute significantly to leaf functionality.
Mechanism of Stomata
- Guard cells open and close stomata, influenced by turgor pressure; high pressure opens and low pressure closes them.
- At night, guard cells flatten, closing the stomata to prevent gas exchange due to the absence of sunlight.
Functions of Stomata
- Allow CO2 to enter for photosynthesis, which occurs primarily in daylight.
- Facilitate the movement of gases and water molecules in and out of the leaf, contributing to transpiration and guttation.
Leaf Functions
- Primary roles of leaves include:
- Photosynthesis
- Transpiration
- Guttation
- Reproduction
Stomata Location
- Stomata are primarily located on the epidermis of the leaf, predominantly on the lower epidermis to reduce water loss.
Purpose of Stomata
- Stomata are essential for gas exchange, enabling plants to acquire CO2 for photosynthesis and expel oxygen and water vapor.
Circadian Functionality
- At night, stomata close to limit CO2 intake when photosynthesis is not occurring.
- During daylight, stomata open to facilitate gas exchange needed for photosynthesis in the presence of sunlight.
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Description
This quiz focuses on the function of stomata and their role in gas exchange in plants. Through flashcards, you'll learn how guard cells operate and the importance of stomata for plant biology. Test your knowledge on this vital process in plant physiology.
