Which of the following organisms has the higest number of chromosomes ?

Options

A. Housefly
B. Butterfly
C. Ophioglossum
D. Onion

Explanation

To determine which organism has the highest number of chromosomes among the given options, we can follow these steps:

### Step-by-Step Solution:

1. **Identify the Organisms and Their Chromosome Numbers:**
- Housefly: 12 chromosomes
- Butterfly: 318 chromosomes
- Ophiglossum: 1260 chromosomes
- Onion: 16 chromosomes

2. **Compare the Chromosome Numbers:**
- Now, we will compare the chromosome numbers of each organism:
- Housefly: 12
- Butterfly: 318
- Ophiglossum: 1260
- Onion: 16

3. **Determine the Highest Number:**
- From the comparison, we can see that:
- 12 (Housefly) < 16 (Onion) < 318 (Butterfly) < 1260 (Ophiglossum)
- Therefore, the organism with the highest number of chromosomes is Ophiglossum.

4. **Conclusion:**
- The correct answer is Ophiglossum, which has 1260 chromosomes, the highest among the listed organisms.

### Final Answer:
Ophiglossum has the highest number of chromosomes.

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