Leaf Structure
What is the primary function of leaves?
The primary function of leaves is photosynthesis (making food for the plant).
What is chlorophyll?
Chlorophyll is a green pigment in plants that allows them to absorb energy from sunlight.
What is the root cap's role?
The root cap protects the tip of the root as it grows through the soil.
What are macroelements?
Macroelements are elements needed in large amounts for organisms (e.g., carbon, nitrogen).
What is a solvent?
A solvent is a liquid in which solids dissolve.
Name the two layers in mesophyll.
The two layers in the mesophyll are palisade layer and spongy parenchyma.
Write the photosynthesis equation.
Carbon dioxide (CO2) + Water (H2O)+ Light Energy → Glucose (C6H12O6)+ Oxygen (O2).
What is phloem’s function?
Phloem transports food (sugars) from the leaves to other parts of the plant.
What is the role of nitrogen in plants?
Nitrogen deficiency causes yellow leaves, smaller plants, and reduced growth.
Define surface tension.
Surface tension is the property of water that allows it to resist an external force, enabling small organisms to “walk” on water.
How do cactus pads function as leaves?
Cactus pads are flattened stems that are specialized to carry out photosynthesis.
Which light colors are best for photosynthesis?
Plants use blue and red light for photosynthesis.
What is cambium, and what does it do?
Cambium is a layer of tissue that produces new xylem and phloem, allowing the plant to grow in diameter.
What happens to plants lacking phosphorus?
Phosphorus deficiency causes:
What happens to ice when it floats?
Ice floats because it is less dense than water.
What happens if leaves are removed?
If leaves are removed, the plant cannot perform photosynthesis and will eventually die.
Where do plants get carbon dioxide?
Plants get carbon dioxide from the air, which is absorbed by the leaves.
Car fumes, factories, animals
List 3 zones of root growth.
The three zones of root growth are:
Why are lipids important in humans?
Lipids:
Why does water have high specific heat?
Water’s high specific heat allows it to regulate temperature, keeping environments stable.
What protects the leaf’s outer surface?
The epidermis protects the leaf’s outer surface.
What's layer of the leaf responsable for photosynthesis the most?
Palisade mesophyll
Explain heartwood vs. sapwood.
Name 2 examples of organic fertilizers.
Examples of organic fertilizers:
Explain cohesion and adhesion.