Adaptation of parasite may be
I. loss of unnecessary organs
II. Presence of adhesive organs
III. Origion of sucker to cling to host
IV. Loss of digestive system
V. hight reproductive capacity
Choose the correct combination

Options

A. I,iII and IV
B. II,IV and V
C. I,IV and V
D. I,II,III,IV and V

Answer

To determine the correct adaptations of parasites from the given statements, we can analyze each one step by step.

### Step-by-Step Solution:

1. **Loss of unnecessary organs (Statement I)**:
- Parasites often lose organs that are not needed for their survival in the host environment. This adaptation allows them to conserve energy and resources.
- **Conclusion**: This statement is correct.

2. **Presence of adhesive organs (Statement II)**:
- Many parasites have developed specialized structures, such as hooks or suckers, that allow them to attach securely to their host. This adaptation is crucial for their survival as it prevents them from being expelled by the host's immune system.
- **Conclusion**: This statement is correct.

3. **Origin of sucker to cling to host (Statement III)**:
- Similar to the previous point, the development of suckers is a specific adaptation that enables parasites to maintain their position on or within the host, ensuring they can feed and reproduce effectively.
- **Conclusion**: This statement is correct.

4. **Loss of digestive system (Statement IV)**:
- Many parasites absorb nutrients directly from their host's body, making a functional digestive system unnecessary. This adaptation allows them to utilize the host's resources more efficiently.
- **Conclusion**: This statement is correct.

5. **High reproductive capacity (Statement V)**:
- Parasites often reproduce in large numbers to increase their chances of survival, as many offspring may not survive due to the host's defenses or other environmental factors. This adaptation helps ensure the continuation of the species.
- **Conclusion**: This statement is correct.

### Final Answer:
All five statements (I, II, III, IV, and V) are correct adaptations of parasites. Therefore, the correct combination is **1, 2, 3, 4, 5**.