What is a leaf?
Q: What is a leaf?
A: A leaf is an above-ground plant organ that is typically green in color.
Q: What are the main functions of a leaf?
A: The main functions of a leaf are photosynthesis and gas exchange.
Q: Why are leaves usually flat and thin?
A: Leaves are usually flat and thin so they can absorb the most light, and so that sunlight can reach the chloroplasts in the cells.
Q: What do stomata do on leaves?
A: Stomata on leaves open and close to regulate carbon dioxide, oxygen, and water vapor exchange with the atmosphere.
Q: What type of plants have leaves all year round?
A: Plants with leaves all year round are called evergreens.
Q: When do deciduous trees shed their leaves?
A: Deciduous trees generally lose their leaves in autumn before changing color.
Q: How does chlorophyll give plants their green color?
A: Chlorophyll found in chloroplasts gives plants their green color through photosynthesis.
