What is the alternative name for bladder worm stage in taenia ?

Options

A. cysticercus
B. Onchosphere
C. Strobila
D. Rostellum

Answer

To answer the question regarding the alternative name for the bladder worm stage in Taenia, we can follow these steps:

### Step-by-Step Solution:

1. **Identify the Organism**: The question refers to Taenia, which is a genus of parasitic flatworms commonly known as tapeworms.

2. **Understand the Life Cycle**: In the life cycle of Taenia, there are various stages, including eggs, larvae, and adult forms. The bladder worm stage is one of these larval stages.

3. **Recognize the Bladder Worm Stage**: The bladder worm stage is specifically known as the cysticercus larva. This larval form is characterized by its fluid-filled cysts that can develop in the tissues of the host.

4. **Confirm the Alternative Name**: The term "bladder worm" is indeed an alternative name for the cysticercus larva. This larva is known to take nutrients from the host's liver and bladder.

5. **Eliminate Incorrect Options**: Other terms mentioned, such as Oncosphere, Strobila, and Rostelum, refer to different structures or stages in the life cycle of Taenia and are not synonymous with the bladder worm stage.

6. **Final Answer**: Therefore, the alternative name for the bladder worm stage in Taenia is **Cysticercus**.