What is true about Taenia saginata

Options

A. Life history has pig as intermediate host
B. There are two large suckers on scolex
C. Rostellar hook are absent
D. Rostellum has double circle of hooks

Explanation

### Step-by-Step Solution:

1. **Understanding Taenia saginata**:
- Taenia saginata is a type of tapeworm belonging to the phylum Platyhelminthes, which are commonly known as flatworms.
- It is primarily an intestinal parasite found in humans.

2. **Life Cycle and Hosts**:
- The life cycle of Taenia saginata involves cattle as the intermediate host, not pigs. This is important to note as it helps identify the species and understand its transmission.

3. **Morphological Features**:
- The body of Taenia saginata is divided into three main parts: the scolex (head), neck, and strobila (body).
- The scolex has four large suckers that help it attach to the intestinal wall of the host.

4. **Presence of Hooks**:
- One of the key identifying features of Taenia saginata is that it lacks hooks on its scolex. This is in contrast to other species of Taenia, such as Taenia solium, which has hooks.

5. **Evaluating Statements**:
- Now, let's evaluate the statements given in the question:
- **Statement 1**: "Life history has pig as intermediate host" - This is incorrect; the intermediate host is cattle.
- **Statement 2**: "There are two large suckers on its scolex" - This is incorrect; there are four suckers.
- **Statement 3**: "Hooks are absent" - This is correct; Taenia saginata does not have hooks.
- **Statement 4**: "Has double circle of hooks" - This is incorrect; Taenia saginata does not have hooks at all.

6. **Conclusion**:
- The true statement about Taenia saginata is that "hooks are absent".