The amount of `CO_2` fixed by a plant, in order to produce 162g of dry organic matter is

Options

A. 264g
B. 193 g
C. 162 g
D. 108 g

Answer

To find the amount of CO₂ fixed by a plant to produce 162 grams of dry organic matter, we can follow these steps:

### Step 1: Understand the relationship between dry organic matter and CO₂ fixation
We know from the information provided that for every 1 gram of dry organic matter, 1.63 grams of CO₂ are fixed.

### Step 2: Set up the calculation
Since we need to find out how much CO₂ is fixed for 162 grams of dry organic matter, we will multiply the amount of dry organic matter by the CO₂ fixation rate.

### Step 3: Perform the multiplication
We calculate the amount of CO₂ fixed as follows:
\[ \text{CO₂ fixed} = \text{Dry organic matter} \times \text{CO₂ fixation rate} \]
\[ \text{CO₂ fixed} = 162 \, \text{grams} \times 1.63 \, \text{grams of CO₂/gram of dry organic matter} \]

### Step 4: Calculate the result
Now, we perform the multiplication:
\[ \text{CO₂ fixed} = 162 \times 1.63 = 264.06 \, \text{grams} \]
Rounding this value, we find that approximately 264 grams of CO₂ are fixed.

### Step 5: Identify the correct option
From the options provided:
- Option A: 8264 grams
- Option B: 193 grams
- Option C: 162 grams
- Option D: 108 grams

The closest answer to our calculation is **264 grams**, which is not listed. However, if we consider the options given, it seems there might have been a misunderstanding in the options provided.

### Conclusion
The amount of CO₂ fixed by a plant to produce 162 grams of dry organic matter is approximately **264 grams**.

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