Which of the following is a partial root parasite ?

Options

A. Sandal wood
B. Mistletoe
C. Orobanche
D. Gonoderma

Explanation

To solve the question "Which of the following is a partial root parasite?", we need to understand the definitions and characteristics of different types of parasites.

### Step-by-Step Solution:

1. **Understand the Definition of Parasites**:
- A parasite is an organism that lives in close association with a host and derives nutrients from it. There are two main types of parasites:
- **Holoparasites**: These are fully dependent on their host for all nutrients and do not have chlorophyll (e.g., dodder).
- **Hemiparasites (Partial Root Parasites)**: These have chlorophyll and can perform photosynthesis, but they still depend on their host for water and nutrients.

2. **Identify the Options**:
- The options given are:
- Sandalwood
- Mistletoe
- Aurobancae
- Gonoderma

3. **Analyze Each Option**:
- **Sandalwood**: This is a hemiparasite. It has chlorophyll and can photosynthesize but relies on its host for water and nutrients. Thus, it is a partial root parasite.
- **Mistletoe**: This is also a hemiparasite and can photosynthesize, but it primarily attaches to the stems of its host plants rather than the roots.
- **Aurobancae**: This is not commonly recognized as a partial root parasite.
- **Gonoderma**: This is a type of fungus and is a holoparasite, meaning it does not perform photosynthesis and relies entirely on its host.

4. **Conclusion**:
- Based on the definitions and characteristics, the correct answer to the question "Which of the following is a partial root parasite?" is **Sandalwood**.

### Final Answer:
**Sandalwood** is a partial root parasite.