Mammalian palate is :
1. Primary structure
2. Parallel to original roof of buccal cavity
3. Tertiary structure
4. Secondary structure

Options

A. 1, 2 and 3 are correct
B. 1 and 2 are correct
C. 2 and 4 are correct
D. 1 and 3 are correct

Answer

To solve the question regarding the mammalian palate, we need to analyze the options provided and understand the anatomical structure of the palate in mammals.

### Step-by-Step Solution:

1. **Understanding the Palate**: The mammalian palate is a structure that separates the nasal cavity from the oral cavity. It plays a crucial role in the process of digestion and respiration.

2. **Identifying the Types of Palate**: There are two main types of palates in mammals:
- Primary Palate: This is the initial structure formed during embryonic development.
- Secondary Palate: This is formed later and is responsible for separating the nasal and oral cavities completely.

3. **Analyzing the Options**:
- **Option 1: Primary Structure**: This is incorrect as the mammalian palate is not just a primary structure; it includes a secondary structure as well.
- **Option 2: Parallel to Original Roof of Buccal Cavity**: This is correct. The secondary palate is indeed parallel to the original roof of the buccal cavity.
- **Option 3: Tertiary Structure**: This is incorrect. The palate is not classified as a tertiary structure.
- **Option 4: Secondary Structure**: This is also correct. The secondary palate is a significant structure in the mammalian anatomy.

4. **Conclusion**: The correct options that describe the mammalian palate are:
- Option 2: Parallel to the original roof of the buccal cavity.
- Option 4: Secondary structure.

Thus, the correct answer is **Option 2 and Option 4**.

### Final Answer:
The mammalian palate is:
- **Option 2: Parallel to original roof of buccal cavity**
- **Option 4: Secondary structure**

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