Why do leaves change color in the fall?
Why do leaves change color in the fall?
credit: Pixabay
credit: Pixabay
Chlorophyll Breakdown
Chlorophyll Breakdown
credit: Pixabay
credit: Pixabay
Chlorophyll, which gives leaves their green color, breaks down in autumn.
Chlorophyll, which gives leaves their green color, breaks down in autumn.
Shorter Days
Shorter Days
credit: Pixabay
credit: Pixabay
Less sunlight leads to reduced chlorophyll production.
Less sunlight leads to reduced chlorophyll production.
Temperature Drop
Temperature Drop
credit: Pixabay
credit: Pixabay
Cooler temperatures contribute to the breakdown of chlorophyll.
Cooler temperatures contribute to the breakdown of chlorophyll.
Revealed Pigments
Revealed Pigments
credit: Pixabay
credit: Pixabay
Yellow and orange pigments (carotenoids) become visible as chlorophyll fades.
Yellow and orange pigments (carotenoids) become visible as chlorophyll fades.
Anthocyanins
Anthocyanins
credit: Pixabay
credit: Pixabay
Some trees produce red pigments called anthocyanins in the fall.
Some trees produce red pigments called anthocyanins in the fall.
Nutrient Absorption
Nutrient Absorption
credit: Pixabay
credit: Pixabay
Trees absorb nutrients from leaves before they fall.
Trees absorb nutrients from leaves before they fall.
Protective Seal
Protective Seal
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credit: Pixabay
A seal forms at the base of the leaf stem, preparing for leaf drop.
A seal forms at the base of the leaf stem, preparing for leaf drop.
Leaf Fall
Leaf Fall
credit: Pixabay
credit: Pixabay
Leaves eventually detach and fall to the ground.
Leaves eventually detach and fall to the ground.
Weather Impact
Weather Impact
credit: Pixabay
credit: Pixabay
Dry, sunny, and cool weather can lead to the most vibrant leaf colors.
Dry, sunny, and cool weather can lead to the most vibrant leaf colors.
Seasonal Cycle
Seasonal Cycle
credit: Pixabay
credit: Pixabay
This process is part of the tree’s preparation for winter dormancy.
This process is part of the tree’s preparation for winter dormancy.