Cystolith contains

Options

A. `CaCO_(3)`
B. `CaCl_(2)`
C. `MgCl_(2)`
D. CaO

Answer

**Step-by-Step Solution:**

1. **Understanding the Term "Cystolith":**
- Cystolith refers to a type of crystal or stone found in certain plant cells, specifically in the epidermal cells. It is an outer growth that can be observed in some plants.

2. **Identifying the Composition of Cystolith:**
- The question asks what cystolith contains. We need to analyze the given options to determine which one is correct.

3. **Analyzing the Options:**
- The options provided are:
- A) CaCO3 (Calcium Carbonate)
- B) CaCl2 (Calcium Chloride)
- C) MgCl2 (Magnesium Chloride)
- D) CaO (Calcium Oxide)

4. **Determining the Correct Option:**
- Among the options, CaCO3 (Calcium Carbonate) is known to be the primary component of cystoliths. Cystoliths are primarily composed of calcium carbonate crystals.
- The other options (CaCl2, MgCl2, CaO) do not represent the composition of cystoliths.

5. **Conclusion:**
- Therefore, the correct answer to the question "Cystolith contains" is **CaCO3 (Calcium Carbonate)**.

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