In lithosere, foliose lichens make the conditions favourable for the growth of

Options

A. crustose lichesn
B. mosses
C. annual grasses
D. perennial grasses.

Explanation

### Step-by-Step Solution:

1. **Understanding Lithosere**:
- Lithosere is a type of ecological succession that occurs on bare rock surfaces. It is characterized by the gradual colonization of organisms, starting from pioneer species.

2. **Role of Pioneer Species**:
- In lithosere, the first organisms to colonize the bare rock are typically crustose lichens. These lichens can survive in harsh conditions and help in breaking down the rock surface.

3. **Transition to Foliose Lichens**:
- As conditions improve, foliose lichens begin to grow. These lichens are larger and have a leaf-like structure. They can shade out the crustose lichens, leading to their decline.

4. **Soil Formation**:
- The growth of foliose lichens contributes to the accumulation of organic matter and soil particles. This is important for creating a more hospitable environment for other plants.

5. **Favorable Conditions for Mosses**:
- The shading and organic matter accumulation by foliose lichens create conditions that are favorable for the growth of mosses. Mosses are more tolerant to moisture and can thrive in the environment created by the foliose lichens.

6. **Conclusion**:
- Therefore, in lithosere, foliose lichens make the conditions favorable for the growth of mosses. The correct answer is option B: mosses.