A space parasite is

Options

A. total stem parasite
B. partial root parasite
C. epiphytes
D. saprophytes

Answer

### Step-by-Step Solution:

1. **Understanding the Term "Space Parasite":**
- A space parasite refers to a type of plant that relies on other plants primarily for physical space to grow, rather than for nutrients or water.

2. **Identifying Characteristics of Space Parasites:**
- Space parasites do not extract water or nutrients from their host plants. Instead, they depend on the host for sunlight and physical support.

3. **Analyzing the Options:**
- **Total Stem Parasite:** This type of parasite, like Cuscuta, attaches to the host and derives nutrients and water from it. This does not fit the definition of a space parasite.
- **Partial Root Parasite:** An example is Centella asiatica, which can photosynthesize but also taps into the roots of other plants for nutrients and water. This also does not fit the definition of a space parasite.
- **Epiphytes:** These plants grow on other plants but do not extract nutrients or water from them. They obtain moisture from the air and perform photosynthesis to create their own food. This aligns with the definition of a space parasite.
- **Saprophytes:** These organisms feed on dead and decaying organic matter. This option is also incorrect as it does not relate to the concept of a space parasite.

4. **Conclusion:**
- Based on the analysis, the correct answer is **epiphytes**. They are the only type of plant listed that fits the description of a space parasite.

### Final Answer:
A space parasite is an **epiphyte**.

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