True nucleus is absent in

Options

A. Bacteria
B. Fungi
C. Bryophytes
D. Pteridophytes

Answer

To determine where a true nucleus is absent, we need to analyze the options provided:

1. **Bacteria**
2. **Fungi**
3. **Bryophytes**
4. **Pteridophytes**

**Step 1: Understanding the concept of a true nucleus.**
A true nucleus is defined as a membrane-bound structure that contains the genetic material of a cell. It is typically found in eukaryotic cells.

**Step 2: Analyzing the options.**
- **Bacteria:** Bacteria are prokaryotic organisms, which means they do not have a true nucleus. Instead, they have a nucleoid, which is an area in the cell where the genetic material is located, but it is not surrounded by a nuclear membrane.

- **Fungi:** Fungi are eukaryotic organisms, which means they do have a true nucleus with a nuclear membrane enclosing their genetic material.

- **Bryophytes:** Bryophytes are also eukaryotic organisms and possess a true nucleus.

- **Pteridophytes:** Pteridophytes, like bryophytes and fungi, are eukaryotic and have a true nucleus.

**Step 3: Conclusion.**
Based on the analysis, the only option where a true nucleus is absent is **Bacteria**.

**Final Answer:** True nucleus is absent in **Bacteria**.

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