Heterotrichous nature of thallus is found in

Options

A. Funaria
B. Fritschiella and Ectocmpous
C. Stigeoclonium and Coleochaete
D. All of these

Answer

To answer the question about the heterotrichous nature of thallus, we can follow these steps:

### Step-by-Step Solution:

1. **Understanding Heterotrichous Nature**:
- The term "heterotrichous" refers to a specific growth pattern in which the thallus (the plant body) has both prostrate (horizontal) and erect (vertical) branches. This means that some parts of the thallus grow flat along the substrate while others grow upright.

2. **Identifying Organisms with Heterotrichous Thallus**:
- The question lists several organisms: Fenuria, Fritschella, Ectocompas, Tygocolonium, and Colliocete. We need to determine if these organisms exhibit the heterotrichous nature of thallus.

3. **Analyzing Each Organism**:
- **Fenuria**: This is a type of moss known as cord moss, which exhibits heterotrichous growth.
- **Fritschella**: This is a green alga that also shows heterotrichous characteristics.
- **Ectocompas**: This is a brown alga that possesses a heterotrichous thallus.
- **Tygocolonium**: This organism is also known to have a heterotrichous nature.
- **Colliocete**: This organism also exhibits the heterotrichous condition.

4. **Conclusion**:
- Since all the mentioned organisms (Fenuria, Fritschella, Ectocompas, Tygocolonium, and Colliocete) exhibit the heterotrichous nature of thallus, the correct answer to the question is that all of these organisms have heterotrichous thallus.

### Final Answer:
Heterotrichous nature of thallus is found in all of the following: Fenuria, Fritschella, Ectocompas, Tygocolonium, and Colliocete.

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