Question

why do plants appear green? image of green leaves options: 1. they excite electrons which emit green light in the visible spectrum. 2. green light is reflected, giving plants their green color. 3. they absorb green light. 4. they absorb electrons by green pigments when exposed to sunlight.

Explanation:

Plants have chlorophyll, a pigment that absorbs most wavelengths of visible light except green. Instead of absorbing green light, plants reflect it. When this reflected green light reaches our eyes, we perceive plants as green. Option A is incorrect as plants don't emit green light by exciting electrons in this way. Option C is wrong because plants absorb other wavelengths (like red and blue) and reflect green. Option D is incorrect as the mechanism isn't about absorbing electrons by green pigments.

Answer:

B. Green light is reflected, giving plants their green color