A normal leaf cell have how many genomes :

Options

A. 1
B. 2
C. 3
D. 4

Answer

To determine how many genomes a normal leaf cell has, we can follow these steps:

### Step-by-Step Solution:

1. **Understanding the Concept of Genome**:
- A genome refers to the complete set of genetic material present in a cell. It includes all the DNA found in the cell.

2. **Identifying the Types of DNA in a Leaf Cell**:
- In a typical leaf cell, there are two main locations where DNA can be found:
- **Nuclear DNA**: This is the DNA located within the nucleus of the cell. It contains the majority of the genetic information required for the functioning of the cell.
- **Extracellular DNA**: This includes DNA found outside the nucleus, specifically in organelles such as chloroplasts and mitochondria.

3. **Counting the Genomes**:
- **Nuclear Genome**: 1 genome (Nuclear DNA).
- **Chloroplast Genome**: 1 genome (Plastidial DNA).
- **Mitochondrial Genome**: 1 genome (Mitochondrial DNA).
- Therefore, in total, a normal leaf cell contains 3 genomes: one from the nucleus, one from the chloroplasts, and one from the mitochondria.

4. **Conclusion**:
- Thus, the total number of genomes in a normal leaf cell is 3.

### Final Answer:
The answer is option 3: **3 genomes**.

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