Pseudocoelom develop from

Options

A. Blastopore lip
B. Archenteron
C. Embryonic mesoderm
D. Blastocoel

Answer

To answer the question "Pseudocoelom develops from," we can follow these steps:

### Step 1: Understand the Definition of Pseudocoelom
- Pseudocoelom is a type of body cavity found in certain organisms, particularly in the phylum Nematoda (roundworms). It is a fluid-filled cavity that lies between the body wall and the internal organs.

### Step 2: Identify the Origin of Pseudocoelom
- Pseudocoelom is not formed from the mesoderm layer as in true coelomates. Instead, it is derived from the blastocoel, which is the fluid-filled cavity present in the early stages of embryonic development.

### Step 3: Analyze the Options Given
- The options provided are:
1. Blastoporal lip
2. Arcanthron
3. Embryonic mesoderm
4. Blastocele

- Among these options, the term "blastocele" refers to the cavity that forms during the early stages of embryonic development.

### Step 4: Conclusion
- Since the pseudocoelom in nematodes is derived from the persistent blastocele, the correct answer to the question is **blastocele**.

### Final Answer
- **Pseudocoelom develops from:** **Blastocele**

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