Match the following
`{:(,"Gland",,"Number"),(1.,"Pituitary",a.,"Unpaired(single)"),(2.,"Thymus",b.,"1 pairs"),(3.,"Adrenal",c.,"2 pairs"),(4.,"Parthyroid",d.,"4 pairs"),(5.,"Pineal",,):}`

Options

A. a-1,a-2,b-3,c-4,a-5
B. b-1,b-2,b-3,d-4,b-5
C. c-1,a-2,a-3,b-4,a-5
D. a-1,b-2,b-3,c-4,b-5

Answer

To solve the matching question regarding glands and their respective numbers, we will follow these steps:

### Step-by-Step Solution

1. **Identify the Glands and Their Characteristics**:
- **Pituitary Gland**: Known as the master gland; it is unpaired (single).
- **Thymus Gland**: Also unpaired (single); secretes thymosine important for T-cell development.
- **Adrenal Gland**: Has one pair; located on top of each kidney.
- **Parathyroid Gland**: Typically has two pairs (four glands total).
- **Pineal Gland**: Unpaired (single); involved in regulating sleep patterns through melatonin.

2. **Match Each Gland to Its Number**:
- **Pituitary (1)**: Unpaired (single) → Match with **a**.
- **Thymus (2)**: Unpaired (single) → Match with **a**.
- **Adrenal (3)**: 1 pair → Match with **b**.
- **Parathyroid (4)**: 2 pairs → Match with **c**.
- **Pineal (5)**: Unpaired (single) → Match with **a**.

3. **Summarize the Matches**:
- Pituitary → a (Unpaired)
- Thymus → a (Unpaired)
- Adrenal → b (1 pair)
- Parathyroid → c (2 pairs)
- Pineal → a (Unpaired)

4. **Check the Options**:
- The correct matches based on the above analysis are:
- A matches with 1 (Pituitary)
- A matches with 2 (Thymus)
- B matches with 3 (Adrenal)
- C matches with 4 (Parathyroid)
- A matches with 5 (Pineal)

5. **Select the Correct Option**:
- The correct answer is the first option where:
- A matches with 1, 2, and 5
- B matches with 3
- C matches with 4

### Final Answer:
The correct matches are:
- **1. Pituitary → a (Unpaired)**
- **2. Thymus → a (Unpaired)**
- **3. Adrenal → b (1 pair)**
- **4. Parathyroid → c (2 pairs)**
- **5. Pineal → a (Unpaired)**