The substance that imparts green colour to the plants is known as

Options

A. Water
B. Chlorophyll
C. Carbon dioxide
D. Calcium

Answer

To solve the question, "The substance that imparts green colour to the plants is known as," we can follow these steps:

### Step 1: Identify the options
The options provided are:
1. Water
2. Chlorophyll
3. Carbon dioxide
4. Calcium

### Step 2: Analyze each option
- **Water**: While water is essential for plant growth and various physiological processes, it does not impart a green color to plants.

- **Chlorophyll**: This is the pigment found in plants that is responsible for their green color. It plays a crucial role in photosynthesis by absorbing light energy.

- **Carbon dioxide**: This gas is used by plants during photosynthesis to produce food, but it does not give plants their green color.

- **Calcium**: This is a nutrient that supports plant growth and development but does not contribute to the green color of plants.

### Step 3: Conclusion
After analyzing all the options, it is clear that the substance that imparts green color to the plants is **Chlorophyll**.

### Final Answer
The substance that imparts green colour to the plants is known as **Chlorophyll**.

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