The early stage human embryo distinctly possesses

Options

A. Gills
B. Gill slits
C. External ear (pinna)
D. Eye brows

Answer

To answer the question "The early stage human embryo distinctly possesses," we need to analyze the options provided and understand the characteristics of a human embryo during its early stages of development.

### Step-by-Step Solution:

1. **Understand the Developmental Stages of Human Embryo**:
- The early human embryo goes through several stages of development where it exhibits certain structures that are characteristic of chordates.

2. **Identify the Options**:
- The options given are:
1. Gills
2. Gill slits
3. External ear (pinna)
4. Eyebrows

3. **Evaluate Each Option**:
- **Option 1: Gills** - Gills are structures found in aquatic animals like fish. Humans do not develop gills at any stage, so this option is incorrect.
- **Option 2: Gill slits** - During the early stages of development, human embryos do possess pharyngeal gill slits, which are structures that are characteristic of chordates. These slits are present in the embryo but are not retained in the adult form. This option is correct.
- **Option 3: External ear (pinna)** - The external ear does not develop until later stages in fetal development, so this option is incorrect.
- **Option 4: Eyebrows** - Eyebrows are a feature that develops much later in the embryonic development process and are not present in the early stages. Thus, this option is also incorrect.

4. **Conclusion**:
- After evaluating all the options, the only correct answer is **Option 2: Gill slits**. These are distinctly present in the early stage of the human embryo.

### Final Answer:
The early stage human embryo distinctly possesses **gill slits**.

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