Cussuta, Viscum and Orobanche are similar in having

Options

A. Hygroscopic roots
B. Assimilatory roots
C. Epiphyllous roots
D. Haustorial roots

Answer

To answer the question regarding the similarities between Cuscuta, Viscum, and Orobanche, we will analyze the characteristics of these plants step by step.

### Step-by-Step Solution:

1. **Identify the Plants**:
- Cuscuta (commonly known as dodder) is a genus of parasitic plants.
- Viscum (mistletoe) is also a well-known parasitic plant.
- Orobanche (broomrape) is another genus of parasitic plants.

2. **Understand Their Nature**:
- All three plants are known for their parasitic nature, meaning they derive nutrients from their host plants.

3. **Examine the Root Types**:
- **Hygroscopic Roots**: These roots absorb moisture from the atmosphere. This type is not characteristic of Cuscuta, Viscum, or Orobanche.
- **Assimilatory Roots**: Also known as photosynthetic roots, these are not typical for the mentioned plants either.
- **Epiphytic Roots**: These roots grow on other plants and absorb nutrients from the air and rain, but they do not specifically apply to Cuscuta, Viscum, or Orobanche.
- **Parasitic Roots**: These roots are specialized structures that allow the plants to attach to and extract nutrients from their host plants.

4. **Conclusion**:
- The correct similarity among Cuscuta, Viscum, and Orobanche is that they all possess parasitic roots, which are adapted to absorb nutrients from their host plants.

### Final Answer:
Cuscuta, Viscum, and Orobanche are similar in having **parasitic roots**.

---