Epiphytes are

Options

A. fungi that attack plants.
B. fungi that form mutualistic associations with roots.
C. nonphotosynthetic parasitic plants.
D. plants that grow on other plants.

Answer

**Step-by-Step Solution:**

1. **Understanding the Definition of Epiphytes:**
- Epiphytes are a type of plant that grows on another plant. They do not harm the host plant and instead rely on it for physical support.

2. **Analyzing the Options:**
- The question provides four options regarding what epiphytes are. We need to evaluate each option:
- **Option A:** Fungi that attack plants - This is incorrect because epiphytes are not fungi; they are plants.
- **Option B:** Fungi that form mutualistic association with roots - This is also incorrect as epiphytes are not fungi and do not form mutualistic associations like mycorrhizae.
- **Option C:** Non-photosynthetic parasitic plants - This is incorrect because epiphytes are not parasitic; they do not derive nutrients from their host plants.
- **Option D:** Plants that grow on other plants - This is the correct option as it accurately describes epiphytes.

3. **Conclusion:**
- Based on the analysis of the options, the correct answer is that epiphytes are "plants that grow on other plants." They obtain moisture and nutrients from the air, rain, and debris around them, but they do not harm the host plant.

**Final Answer:**
- Epiphytes are plants that grow on other plants.

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