Find out the one out w.r.t parasitic plants:

Options

A. Cuscuta
B. Viscum
C. Raffesia
D. Pisum

Answer

To solve the question of finding the odd one out with respect to parasitic plants, let's analyze each option step by step.

### Step-by-Step Solution:

1. **Understand the Concept of Parasitic Plants**:
Parasitic plants are those that derive some or all of their nutritional requirements from another living plant (the host). They often depend on their host for water, nutrients, and sometimes even for photosynthesis.

2. **Analyze the First Option - Cascata**:
- Cascata is a parasitic plant that naturally grafts onto its host to extract water and nutrients.
- Since it is a parasitic plant and relies on a host, it does not qualify as the odd one out.

3. **Analyze the Second Option - Viscum**:
- Viscum is also a parasitic plant that depends on its host for water and nutrients.
- Like Cascata, Viscum is a true parasite and does not qualify as the odd one out.

4. **Analyze the Third Option - Rafflesia**:
- Rafflesia is known to be one of the most extreme parasitic plants.
- It has lost the ability to photosynthesize and has no chloroplasts, relying entirely on its host for all its nutritional needs.
- This extreme dependency sets Rafflesia apart from the other two options.

5. **Conclusion**:
- Based on the analysis, the odd one out is Rafflesia because it is an extreme parasite that has lost its ability to photosynthesize and relies completely on its host for survival.

### Final Answer:
The odd one out with respect to parasitic plants is **Rafflesia**.

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