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Questions and Answers
What is the main function of stomata in plant leaves?
What is the main function of stomata in plant leaves?
- To regulate gas exchange and water loss (correct)
- To synthesize glucose for energy
- To produce chlorophyll for photosynthesis
- To absorb light energy for photosynthesis
What is the role of guard cells in stomata?
What is the role of guard cells in stomata?
- To regulate the opening and closing of stomata (correct)
- To produce chlorophyll for photosynthesis
- To synthesize glucose for energy
- To absorb light energy for photosynthesis
What is the function of chlorophyll a in photosynthesis?
What is the function of chlorophyll a in photosynthesis?
- To absorb light energy for the light-dependent reactions (correct)
- To produce glucose for energy
- To regulate water loss through transpiration
- To reflect light energy for photosynthesis
Why do plants appear green?
Why do plants appear green?
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What is the role of chlorophyll b in photosynthesis?
What is the role of chlorophyll b in photosynthesis?
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What is the purpose of chlorophyll c in algae and cyanobacteria?
What is the purpose of chlorophyll c in algae and cyanobacteria?
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Study Notes
Photosynthesis
Stomata
- Small openings on the surface of plant leaves that allow for gas exchange
- Found on the underside of leaves, typically in clusters
- Consist of:
- Guard cells: special cells that surround the stoma and regulate its opening and closing
- Stoma: the small pore that allows for gas exchange
- Function:
- Allow CO2 to enter the leaf for photosynthesis
- Allow O2 to exit the leaf as a byproduct of photosynthesis
- Regulate water loss through transpiration
Chlorophyll
- Green pigment found in plants, algae, and cyanobacteria
- Responsible for absorbing light energy for photosynthesis
- Characteristics:
- Absorbs light in the blue and red parts of the visible spectrum
- Reflects light in the green part of the spectrum, giving plants their green color
- Types:
- Chlorophyll a: the most important form of chlorophyll, involved in the light-dependent reactions of photosynthesis
- Chlorophyll b: accessory pigment that absorbs light energy and transfers it to chlorophyll a
- Other forms of chlorophyll: found in specific organisms, such as chlorophyll c in algae and cyanobacteria
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