Which of the following will have the same ploidy level ?

Options

A. Primary spermatocyte , primary oocyte, and second polar body
B. Oogonia , primary oocyte , and first polar body
C. Second polar body , spermatids, and primary spermatocyte
D. First polar body , secondary oocyte , and spermatozoa.

Answer

To determine which of the following has the same ploidy level, we need to analyze the ploidy levels of each option provided. Ploidy refers to the number of sets of chromosomes in a cell. Here’s the step-by-step solution:

### Step 1: Identify the Ploidy Levels
1. **Primary Spermatocyte**: This cell is diploid (2N), which means it has two sets of chromosomes. In humans, this is 46 chromosomes.
2. **Primary Oocyte**: Similar to the primary spermatocyte, the primary oocyte is also diploid (2N) and has 46 chromosomes.
3. **Second Polar Body**: This is a haploid cell (N), meaning it has one set of chromosomes, which is 23 chromosomes in humans.
4. **Oogonia**: This is also diploid (2N) and has 46 chromosomes.
5. **First Polar Body**: This is haploid (N) and has 23 chromosomes.
6. **Spermatids**: These are haploid (N) and also have 23 chromosomes.
7. **Secondary Oocyte**: This is haploid (N) and has 23 chromosomes.
8. **Spermatozoa**: This is haploid (N) and has 23 chromosomes.

### Step 2: Compare Ploidy Levels
- The diploid cells (2N) are:
- Primary Spermatocyte (2N)
- Primary Oocyte (2N)
- Oogonia (2N)

- The haploid cells (N) are:
- Second Polar Body (N)
- First Polar Body (N)
- Spermatids (N)
- Secondary Oocyte (N)
- Spermatozoa (N)

### Step 3: Identify Groups with Same Ploidy Level
- The diploid group (2N) consists of:
- Primary Spermatocyte
- Primary Oocyte
- Oogonia

- The haploid group (N) consists of:
- Second Polar Body
- First Polar Body
- Spermatids
- Secondary Oocyte
- Spermatozoa

### Conclusion
The cells that have the same ploidy level are:
- Primary Spermatocyte, Primary Oocyte, and Oogonia (all diploid, 2N).

### Final Answer
The correct option is the one that includes the Primary Spermatocyte, Primary Oocyte, and Oogonia as they all share the same ploidy level (2N).

---