Why Leaves Change Color?

Why Leaves Change Color?

Autumn is the season when leaves change color. Try this quiz and check if you know the reason. Start now!

published on October 10, 2011102 responses 3 4.0★ / 5

How does autumn color happen?

How does autumn color happen?
Leaf pigments, length of night, weather
Leaf pigments, length of day, weather

Where do autumn colors come from?

Where do autumn colors come from?
Carotenoids
Anthocyanins
Chlorophyll, Carotenoids and Anthocyanins

How does autumn color Affect Weather?

How does autumn color Affect Weather?
Moisture and length of night
Temperature and moisture
Leaf pigments and temperature

What triggers leaf fall?

What triggers leaf fall?
sugars promote production of anthocyanins
sugars promote production of carotenoids
sugars promote production of chlorophyll

What does all this do for the tree?

What does all this do for the tree?
They must have protection to survive raining
They must have protection to survive freezing
They must have protection to survive heating

What happens to all fallen leaves?

What happens to all fallen leaves?
They decompose
They restock the soil
They decompose and restock the soil