The second meiotic division of ………..P …….. is unequal and results in the formation of ………. Q …….. .
Select the appropriate option for P and Q.

Options

A. P-secondary spermatocytes, Q-spermatids
B. P-primary oocyte, Q-ovum
C. P-secondary oocyte, Q-polar body
D. P-primary spermatocytes, Q-spermatids

Answer

To solve the question regarding the second meiotic division of P and the formation of Q, we need to analyze the options given and understand the process of meiosis, particularly in the context of oogenesis (the formation of female gametes).

### Step-by-Step Solution:

1. **Understanding Meiosis**: Meiosis consists of two divisions: the first meiotic division (Meiosis I) and the second meiotic division (Meiosis II). In females, meiosis occurs during oogenesis, which leads to the formation of ova (egg cells).

2. **Identifying P**: The question states that the second meiotic division of P is unequal. In oogenesis, the second meiotic division occurs in the secondary oocyte. This division is unequal because it produces one large ovum and one smaller polar body.

3. **Identifying Q**: The result of the second meiotic division of the secondary oocyte (P) is the formation of the ovum (Q). The polar body produced during this division is not a functional gamete and is much smaller than the ovum.

4. **Evaluating Options**:
- **Option 1**: Secondary spermatocyte and spermatids (not applicable as this refers to male gamete formation).
- **Option 2**: Primary oocyte and ovum (not applicable as the primary oocyte undergoes the first meiotic division).
- **Option 3**: Secondary oocyte and polar body (this is partially correct but does not specify the ovum).
- **Option 4**: Primary spermatocytes and spermatids (not applicable as this refers to male gamete formation).

5. **Conclusion**: The correct answer is that P is the "secondary oocyte" and Q is the "ovum". The second meiotic division of the secondary oocyte is unequal and results in the formation of the ovum and a polar body.

### Final Answer:
P = Secondary oocyte
Q = Ovum