What is the primary function of a leaf?
Site of photosynthesis
The leaf is essential for converting light energy into chemical energy.
What is the photosynthesis equation represented in chemical symbols?
6H2O + 6CO2 → C6H12O6 + 6O2
This equation shows the conversion of water and carbon dioxide into glucose and oxygen.
What does a leaf monitor in terms of gas exchange?
CO2 and O2
The leaf regulates the intake of carbon dioxide and the release of oxygen.
What is the cuticle in a leaf?
Waxy layer
The cuticle helps reduce water loss from the leaf.
What is contained within the palisade mesophyll?
Chloroplasts
This layer is crucial for photosynthesis due to its high concentration of chloroplasts.
What is the role of the upper epidermis in a leaf?
Protective layer
The upper epidermis protects the leaf and helps prevent water loss.
What is the function of the spongy mesophyll?
Gas exchange and storage
The spongy mesophyll facilitates gas exchange and contains air spaces.
What is the lower epidermis responsible for?
Protection and gas exchange
It contains stomata for gas exchange and helps protect the leaf.
What are stomata?
Openings for gas exchange
Stomata allow CO2 to enter and O2 to exit the leaf.
What are guard cells?
Control stomata
Guard cells regulate the opening and closing of stomata.
What do chloroplasts contain?
Chlorophyll and light-absorbing pigments
Chloroplasts are essential for capturing light energy for photosynthesis.
What is the significance of different pigments in chloroplasts?
Increase photosynthetic efficiency
Different pigments absorb various wavelengths of light.
Where do the light reactions of photosynthesis occur?
Thylakoid
Thylakoids are membrane-bound structures within chloroplasts.
What is a granum?
Stack of thylakoids
Grana increase the surface area for light absorption.
Where does the Calvin cycle occur?
Stroma
The stroma is the fluid-filled space surrounding the thylakoids in chloroplasts.
