Which of the following is an example of saprophytes?

Options

A. Agraricus
B. Lichen
C. Chlamydomonas
D. Ferns

Answer

To determine which of the following is an example of saprophytes, we need to understand what saprophytes are and analyze the given options.

### Step-by-Step Solution:

1. **Definition of Saprophytes**:
- Saprophytes are organisms that obtain their nutrients by feeding on dead and decaying organic matter. They play a crucial role in the ecosystem by decomposing dead material and recycling nutrients back into the soil.

2. **Analyzing the Options**:
- **Agaricus**: This is a genus of fungi that includes mushrooms. Agaricus is known to grow on decaying organic matter, such as dead wood or plant material. Since it derives its nutrients from dead organisms, it qualifies as a saprophyte.

- **Lichen**: Lichens are symbiotic associations between fungi and algae. They do not feed on dead material but rather engage in a mutualistic relationship where both partners benefit. Therefore, lichen is not a saprophyte.

- **Chlamydomonas**: This is a genus of green algae. Chlamydomonas is primarily autotrophic, meaning it produces its own food through photosynthesis. While it can act as a heterotroph in stressful environments, it does not feed on dead organic matter and thus is not a saprophyte.

- **Fern**: Ferns are vascular plants and are not classified as saprophytes. They typically engage in photosynthesis and do not feed on decaying organic matter.

3. **Conclusion**:
- After analyzing all the options, the only organism that fits the definition of a saprophyte is **Agaricus**. It feeds on dead and decaying material, making it the correct answer.

### Final Answer:
The correct example of a saprophyte is **Agaricus**.