Question

Pseudo-coelom is found in

• A. Taenia
• B. Ascaris
• C. Hydra
• D. all of these

Answer 1

The correct option is B

Ascaris

The correct option is B.

Explanation of correct option:

1. The body cavity found in animal bodies is referred to as a coelom.
2. Pseudo-coelom is a fluid-filled body cavity found between the mesoderm and the endoderm.
3. Pseudo-coelom is also known as a false coelom.
4. In the phylum Aschelminthes, pseudo-coelom is observed.
5. As from the options, Ascaris is a member of phylum Aschelminthes, which shows the presence of pseudo-coelom.

Explanation of incorrect options:

Option A:

1. Taenia belongs to the phylum Platyhelminthes.
2. Members of the phylum Platyhelminthes are acoelomates.
3. When organisms do not have a body cavity, they are referred to as acoelomates.

Option C:

1. Hydra is a diploblastic animal that does not contain a body cavity or a coelom.
2. Instead of the true coelom, a gastrovascular cavity is present.

Final answer: Pseudocoelom is found in Ascaris.