Autumn Leaves Quiz

Why do leaves change color in the fall?

• Because they lose their chlorophyll and other pigments start to show their colors.

• Because they receive more sunlight.

• Because they start growing new leaves.

• Because they are drying out and dying.

What pigment is responsible for making leaves green?

• Carotene

• Chlorophyll

• Anthocyanin

• Xanthophyll

What weather conditions are best for leaves to change color?

• Cold and freezing nights with less rain and snow.

• Warm and sunny days, followed by cool and crisp but not freezing nights.

• Constant rain and overcast days.

• Hot and dry days with cool nights.

What happens to the spots on the branches where leaves were attached after they fall off?

• They grow new leaves immediately.

• They remain open and vulnerable.

• They get sealed up.

• They start to rot.

Why is the change of leaf color a sign that winter is coming?

• Because the tree is dying.

• Because the tree is absorbing more sunlight.

• Because it takes a lot of energy and water for plants to keep their leaves healthy in the cold, dry winter.

• Because the tree is preparing to grow fruit.

Why do leaves change color in the fall?

• they have a special pigment called chlorophyll

• it gets colder and there is more rain and snow

• it takes a lot of energy and water for plants to keep their leaves healthy in the cold, dry winter

• they break down chlorophyll into smaller molecules

What helps trees save energy and prepare for winter?

• the colors of the leaves changing

• the spots on the branches where the leaves were attached getting sealed up

• the warm and sunny fall days

• the tree making new chlorophyll

What is the special pigment in leaves that makes them green?

• chlorophyll

• keratin

• melanin

• hemoglobin