Photosynthesis and Plant Responses: Light and Photosynthesis

The video explains the composition of a rainbow, which consists of colors like red, orange, yellow, green, blue, indigo, and violet, originating from sunlight or white light. When white light passes through raindrops or a prism, it separates into different colors. In plants, chlorophyll is a key pigment that reflects green light, making leaves appear green. As seasons change, chlorophyll diminishes, revealing other pigments like carotenoids, which give leaves their autumn colors.

What causes the separation of colors in a rainbow?

• Reflection of light

• Diffusion of sunlight

• Absorption of colors

• Refraction of white light

Which colors do green leaves primarily reflect?

• Indigo and red

• Orange and violet

• Green and yellow

• Red and blue

What is the primary role of chlorophyll in plants?

• To absorb water

• To reflect sunlight

• To convert light into energy

• To provide structural support

What happens to chlorophyll as the growing season ends?

• It becomes less dominant

• It changes to a different pigment

• It remains unchanged

• It becomes more dominant

Which pigment is responsible for the orange color in carrots?

• Xanthophyll

• Carotenoids

• Anthocyanin

• Chlorophyll