Find out the correct sequence of haemopoietic tissues from early embryonic stage, after birth and an adult stages is:  

Options

A. Amniotic mesoderm, liver, kidney, red bone marrow
B. Chorionic epithelium, liver, spleen, red bone marrow
C. Yolk sac mesoderm, liver, spleen and red bone marrow
D. allantois, liver, kidney, spleen

Answer

To find the correct sequence of hemopoietic tissues from the early embryonic stage, through the after-birth stage, and into adulthood, we can follow these steps:

### Step-by-Step Solution:

1. **Understand Hemopoietic Tissues**:
- Hemopoietic tissues are responsible for the formation of blood cells, including red blood cells (RBCs), white blood cells (WBCs), and platelets.

2. **Identify the Hemopoietic Tissue in the Early Embryonic Stage**:
- In the early embryonic stage, the primary hemopoietic tissue is the **yolk sac**. This is where the initial formation of blood cells occurs.

3. **Identify the Hemopoietic Tissues After Birth**:
- After birth, the liver and spleen take over the role of hemopoietic tissues. These organs are responsible for producing blood cells during infancy.

4. **Identify the Hemopoietic Tissue in Adulthood**:
- In adults, the primary site of blood cell formation is the **bone marrow**. This is where hematopoiesis predominantly occurs.

5. **Compile the Sequence**:
- Based on the information gathered, the correct sequence of hemopoietic tissues is:
- **Yolk Sac** (early embryonic stage) → **Liver and Spleen** (after birth) → **Bone Marrow** (adult stage).

6. **Select the Correct Option**:
- From the options provided, identify the one that matches the sequence: Yolk Sac → Liver/Spleen → Bone Marrow. This corresponds to option three.

### Final Answer:
The correct sequence of hemopoietic tissues is:
**Yolk Sac → Liver and Spleen → Bone Marrow**.