Which monerans are termed as "energy parasites"?

Options

A. Rickettsia
B. Chlamydiae
C. Actinomycetes
D. Mycoplasma

Answer

**Step-by-Step Solution:**

1. **Understanding the Question**: The question asks which monerans are referred to as "energy parasites." Monerans are a group of unicellular organisms, primarily bacteria.

2. **Analyzing the Options**:
- **Option 1: Rickettsia**: This is a genus of non-motile, gram-negative bacteria. They are known to be obligate intracellular parasites but are not specifically termed "energy parasites."
- **Option 2: Claymite**: This is the correct answer. Claymites are classified as monerans and are known as "energy parasites" because they derive energy from their host organisms.
- **Option 3: Actinomycetes**: These are gram-positive bacteria that form filamentous structures. They are not classified as energy parasites.
- **Option 4: Mycoplasma**: These are bacteria that lack a cell wall. They are not referred to as energy parasites either.

3. **Conclusion**: After analyzing all the options, the correct answer is **Claymite**, as it is the moneran that is termed an "energy parasite."

**Final Answer**: Claymite

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