RNA is absent in :

Options

A. Ribosome
B. Nucleolus
C. Plasmalemma
D. More than one option is correct

Answer

To solve the question "RNA is absent in:", we need to analyze each of the given options to determine where RNA is not present.

### Step-by-Step Solution:

1. **Understanding RNA**:
- RNA (Ribonucleic Acid) is a molecule that plays a crucial role in coding, decoding, regulation, and expression of genes. It is typically single-stranded and consists of nucleotides that include adenine (A), guanine (G), cytosine (C), and uracil (U).

2. **Analyzing the Options**:
- **Option A: Ribosome**:
- Ribosomes are cellular structures that synthesize proteins. They contain ribosomal RNA (rRNA), which is essential for their function. Therefore, RNA is present in ribosomes.

- **Option B: Nucleolus**:
- The nucleolus is a dense region within the nucleus where ribosomal RNA is synthesized. Thus, RNA is also present in the nucleolus.

- **Option C: Plasma Lemma**:
- The plasma lemma (or plasma membrane) is the outer membrane of a cell, primarily composed of lipids and proteins. It does not contain RNA. Hence, RNA is absent in the plasma lemma.

- **Option D: More than one option is correct**:
- Since only the plasma lemma is identified as lacking RNA, this option cannot be correct.

3. **Conclusion**:
- Based on the analysis, the correct answer to the question "RNA is absent in:" is **Option C: Plasma Lemma**.

### Final Answer:
**Option C: Plasma Lemma**

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