The yellow-orange coloration of leaves in the fall is primarily due to carotenoids.

Here's a step-by-step explanation:

1. During the growing season, chlorophyll a and b, which are responsible for the green color of leaves, are constantly being produced and broken down as they participate in photosynthesis.

2. As the days get shorter and temperatures drop in the fall, the production of chlorophyll slows down and eventually stops.

3. As the green chlorophyll breaks down and is not replaced, other pigments present in the leaf become more visible.

4. Carotenoids, which are always present in the leaf, but are usually masked by the green of chlorophyll, are responsible for the yellow and orange hues we see in fall leaves.

5. RuBP, or Ribulose-1,5-bisphosphate, is not a pigment but a molecule involved in the photosynthesis process, so it doesn't contribute to leaf color.

Question

The yellow-orange coloration of leaves in the fall is primarily due to carotenoids.

Here's a step-by-step explanation:

1. During the growing season, chlorophyll a and b, which are responsible for the green color of leaves, are constantly being produced and broken down as they participate in photosynthesis.

2. As the days get shorter and temperatures drop in the fall, the production of chlorophyll slows down and eventually stops.

3. As the green chlorophyll breaks down and is not replaced, other pigments present in the leaf become more visible.

4. Carotenoids, which are always present in the leaf, but are usually masked by the green of chlorophyll, are responsible for the yellow and orange hues we see in fall leaves.

5. RuBP, or Ribulose-1,5-bisphosphate, is not a pigment but a molecule involved in the photosynthesis process, so it doesn't contribute to leaf color.

Knowee AI · Accepted Answer

The yellow-orange coloration of leaves in the fall is primarily due to carotenoids.

Here's a step-by-step explanation:

1. During the growing season, chlorophyll a and b, which are responsible for the green color of leaves, are constantly being produced and broken down as they participate in photosynthesis.

2. As the days get shorter and temperatures drop in the fall, the production of chlorophyll slows down and eventually stops.

3. As the green chlorophyll breaks down and is not replaced, other pigments present in the leaf become more visible.

4. Carotenoids, which are always present in the leaf, but are usually masked by the green of chlorophyll, are responsible for the yellow and orange hues we see in fall leaves.

5. RuBP, or Ribulose-1,5-bisphosphate, is not a pigment but a molecule involved in the photosynthesis process, so it doesn't contribute to leaf color.

What is responsible for the yellow-orange coloration of leaves in the fall?RuBPchlorophyll bchlorophyll acarotenoids

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What is responsible for the yellow-orange coloration of leaves in the fall?

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