Chlorophyll primarily absorbs light from which part of the spectrum?

Chlorophyll primarily absorbs light from which part of the spectrum?

• A. Green and blue light
• B. Red and blue light
• C. Yellow and green light
• D. All visible light

Answer: (B)

Chlorophyll primarily absorbs light in the red and blue parts of the spectrum, making this the correct choice. This is significant because chlorophyll is the pigment responsible for photosynthesis in plants, capturing light energy to convert carbon dioxide and water into glucose and oxygen. The absorption peaks are typically around the blue range (about 430-450 nm) and the red range (around 640-680 nm). While chlorophyll does reflect green light, that's why plants appear green, it does not absorb it effectively. Therefore, choosing options that include green light, such as those that mention green or yellow, would be incorrect. The misconception might stem from the colorful nature of plant leaves, yet the efficiency of light absorption by chlorophyll is crucial for photosynthesis, where red and blue wavelengths play the primary role.

Chlorophyll primarily absorbs light in the red and blue parts of the spectrum, making this the correct choice. This is significant because chlorophyll is the pigment responsible for photosynthesis in plants, capturing light energy to convert carbon dioxide and water into glucose and oxygen. The absorption peaks are typically around the blue range (about 430-450 nm) and the red range (around 640-680 nm).

While chlorophyll does reflect green light, that's why plants appear green, it does not absorb it effectively. Therefore, choosing options that include green light, such as those that mention green or yellow, would be incorrect. The misconception might stem from the colorful nature of plant leaves, yet the efficiency of light absorption by chlorophyll is crucial for photosynthesis, where red and blue wavelengths play the primary role.