The plant of this group are adapted to live partly in water and partly above substratum and free from water

Options

A. Xerophytes
B. Thallophytes
C. Halophytes
D. Hydrophytes

Explanation

To solve the question regarding the group of plants that are adapted to live partly in water and partly above the substratum, we can follow these steps:

### Step-by-Step Solution:

1. **Understand the Question**: The question asks about plants that can live both in water and above the water surface. This indicates a specific type of plant adapted to such environments.

2. **Identify the Types of Plants**: The question provides four options:
- Xerophytes
- Thalophytes
- Halophytes
- Hydrophytes

3. **Define Each Type**:
- **Xerophytes**: These are plants adapted to dry environments, such as deserts, and do not thrive in water.
- **Thalophytes**: These are simple plants like algae and fungi that do not have true roots, stems, or leaves and are often aquatic.
- **Halophytes**: These are salt-tolerant plants that grow in saline environments, such as coastal areas.
- **Hydrophytes**: These are plants that are adapted to live in water, but some can also grow partially above water.

4. **Analyze the Options**: Since the question specifies plants that live partly in water and partly above the substratum, we need to focus on hydrophytes. Hydrophytes can be fully submerged or partially submerged, which fits the description given in the question.

5. **Select the Correct Answer**: Based on the definitions and adaptations, the correct answer is **Hydrophytes**.

### Final Answer:
The plants of this group are called **Hydrophytes**.

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