Find out incorrect:

Options

A. Pituitary -FSH
B. Thyroid -`T_(4)`
C. Ovary -Calcitonin
D. Islets of Langerhans -insulin

Answer

To solve the question "Find out incorrect," we will analyze each option provided to determine which one does not correctly match the gland with its respective hormone.

### Step-by-Step Solution:

1. **Option 1: Pituitary and Follicle-Stimulating Hormone (FSH)**
- The pituitary gland is known to secrete Follicle-Stimulating Hormone (FSH).
- FSH plays a crucial role in regulating the menstrual cycle and stimulating egg growth in the ovaries.
- **Conclusion**: This option is correct.

2. **Option 2: Thyroid and T4 Hormone**
- The thyroid gland produces Thyroxine, commonly referred to as T4.
- T4 is essential for regulating metabolism in the body.
- **Conclusion**: This option is also correct.

3. **Option 3: Ovaries and Calcitonin**
- Ovaries are responsible for producing sex hormones, primarily estrogen and progesterone.
- Calcitonin, on the other hand, is a hormone produced by the thyroid gland, not the ovaries.
- **Conclusion**: This option is incorrect.

4. **Option 4: Islets of Langerhans and Insulin**
- The Islets of Langerhans are clusters of cells in the pancreas that produce insulin.
- Insulin is crucial for regulating blood sugar levels.
- **Conclusion**: This option is correct.

### Final Answer:
The incorrect match is **Option 3: Ovaries and Calcitonin**.