Assertion. Submerged plants get carbon dioxide in the form of carbonates and bicarbonates.
Reason. Stomata are not present in submerged plants

Options

A. If both A and R are true and R is the correct explanation of A
B. If both A and R are true but R is not the correct explanation of A
C. If A is true and R is false
D. If both A and R are false

Answer

**Step-by-Step Solution:**

1. **Understanding the Assertion**: The assertion states that submerged plants obtain carbon dioxide in the form of carbonates (CO3²⁻) and bicarbonates (HCO3⁻). This is true because submerged plants, or hydrophytes, utilize the dissolved gases present in water for their metabolic processes.

2. **Understanding the Reason**: The reason given is that stomata are not present in submerged plants. This is also true, as submerged plants do not have stomata because they do not need to facilitate gas exchange in the same way that terrestrial plants do. Instead, they absorb gases directly from the water through their surface.

3. **Connecting Assertion and Reason**: While both the assertion and the reason are true statements, the reason does not adequately explain the assertion. The assertion about how submerged plants obtain carbon dioxide is correct, but the absence of stomata is not the reason for this method of carbon dioxide acquisition. Instead, it is a characteristic of their adaptation to an aquatic environment.

4. **Conclusion**: Therefore, the correct answer is that both the assertion and the reason are true, but the reason is not the correct explanation for the assertion.

**Final Answer**: Both the assertion and the reason are true, but the reason is not the correct explanation for the assertion.

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