Optimum growth of plants occurs in

Options

A. (a) Blue light
B. (b) Red light
C. (c) White light
D. (d) Green light

Answer

**Step-by-Step Solution:**

1. **Understand the Role of Light in Plant Growth**: Plants require light for photosynthesis, which is the process through which they convert light energy into chemical energy to produce food.

2. **Identify the Types of Light**: Light is composed of various wavelengths, which can be categorized into colors represented by the acronym VIBGYOR (Violet, Indigo, Blue, Green, Yellow, Orange, Red).

3. **Recognize the Importance of Chlorophyll**: Chlorophyll is the pigment in plants that absorbs light for photosynthesis. It primarily absorbs blue and red light while reflecting green light, which is why plants appear green.

4. **Determine the Optimal Light for Photosynthesis**: Research shows that the rate of photosynthesis is highest under white light, which contains all the colors of the spectrum. This means that plants grow best when exposed to white light.

5. **Compare the Effects of Different Light Colors**: While blue light is beneficial for plant growth, red light also supports growth but is less effective than blue light. Green light is not utilized effectively by plants for photosynthesis.

6. **Conclude with the Best Option**: Based on the information, the optimum growth of plants occurs in white light, followed by blue and red light.

**Final Answer**: The optimum growth of plants occurs in **white light**.

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