Select the correct statement .
Statements -I : Thermoacidophiles are obligate anaerobes and heterotrophs.
Statement -II They used elemental sulfur and product hydrogen sulfide .

Options

A. Statement-I is true and statement -II is false
B. Statements -II is true and statement - I is false
C. Both the statement -I and statement -II are false
D. Both the statements -I and statement II - are true

Answer

To solve the question, we need to analyze both statements provided:

**Step 1: Analyze Statement I**
- Statement I claims that "Thermoacidophiles are obligate anaerobes and heterotrophs."
- Thermoacidophiles are microorganisms that thrive in hot, acidic environments. They are indeed obligate anaerobes, meaning they cannot survive in the presence of oxygen. Additionally, many thermoacidophiles are heterotrophs, meaning they cannot produce their own food and rely on organic compounds for nutrition.
- Therefore, Statement I is **true**.

**Step 2: Analyze Statement II**
- Statement II states that "They use elemental sulfur and produce hydrogen sulfide."
- Thermoacidophiles typically utilize elemental sulfur as an electron acceptor in their metabolic processes. However, the product of this process is often sulfuric acid rather than hydrogen sulfide. Hydrogen sulfide is more commonly associated with other types of bacteria, like sulfate-reducing bacteria.
- Therefore, Statement II is **false**.

**Step 3: Conclusion**
- Since Statement I is true and Statement II is false, the correct answer is that only Statement I is correct.

**Final Answer:**
- The correct answer is that Statement I is true and Statement II is false.

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