Select incorrect statement for photosynthesis

Options

A. plants requires carbon dioxide from the atmosphere
B. plant covert energy coming from the sum into chemical energy
C. chemical energy produced by photosynthesis is used for the growth and sustenance of our biosphere
D. `CO_(2)` is the source of `O_(2)` evolved

Answer

**Step-by-Step Solution:**

1. **Understanding the Question:**
The question asks to select the incorrect statement regarding photosynthesis. We need to analyze each option carefully to determine which statement is false.

2. **Analyzing the Options:**
- **Option 1:** "Plants require carbon dioxide from the atmosphere."
- This statement is true. Plants take in carbon dioxide (CO2) from the atmosphere for photosynthesis.

- **Option 2:** "Plants convert energy coming from the sun into chemical energy."
- This statement is also true. During photosynthesis, plants convert light energy from the sun into chemical energy in the form of glucose.

- **Option 3:** "Chemical energy produced by photosynthesis is used for the growth and sustenance of our biosphere."
- This statement is true as well. The chemical energy stored in glucose is utilized by plants and other organisms for growth and sustenance.

- **Option 4:** "CO2 is the source of O2 evolved."
- This statement is incorrect. The oxygen (O2) produced during photosynthesis comes from the photolysis of water (H2O), not from carbon dioxide. Water molecules are split to release oxygen.

3. **Conclusion:**
After analyzing all the options, the incorrect statement is **Option 4**: "CO2 is the source of O2 evolved."

**Final Answer:** Option 4 is the incorrect statement regarding photosynthesis.

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