The highest number of chromosomes recorded for animals is found n

Options

A. Amoeba
B. Ophioglossum reticulatum
C. Aulacantha
D. Geometrid moth

Answer

To solve the question regarding which animal has the highest number of chromosomes, we can follow these steps:

### Step-by-Step Solution:

1. **Understanding Chromosomes**:
- Chromosomes are structures within cells that contain DNA. They are visible during cell division and vary in number among different species.

2. **Identifying the Lowest Number of Chromosomes**:
- The lowest number of chromosomes in animals is found in the Horse Roundworm (Ascaris), which has only 2 chromosomes in its diploid cell.

3. **Comparing with Other Organisms**:
- In plants, the fern Ophioglossum has the highest number of chromosomes, with 1260 in its diploid cells. However, we are focusing on animals.

4. **Finding the Animal with the Highest Number of Chromosomes**:
- The animal with the highest number of chromosomes is the protozoan Olocantha, which belongs to the group Radiolarians. It has 1600 chromosomes in its diploid cell.

5. **Comparing with Humans**:
- For context, humans have 46 chromosomes in their diploid cells, which is significantly lower than that of Olocantha.

6. **Conclusion**:
- Therefore, the answer to the question is that the highest number of chromosomes recorded for animals is found in Olocantha, with 1600 chromosomes in its diploid cells.

### Final Answer:
The highest number of chromosomes recorded for animals is found in **Olocantha**, which has 1600 chromosomes in its diploid cell.

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