Which of the following statements is/are true regarding water hyacinth ?

Options

A. All three types of vegetative parts are modified in it
B. Root system shows root pockets
C. Flower is modified shoot in it
D. All the above

Answer

To determine which statements are true regarding water hyacinth, we will analyze each option provided in the question step by step.

### Step-by-Step Solution:

1. **Understanding Water Hyacinth**:
- Water hyacinth (Eichhornia crassipes) is a free-floating aquatic plant known for its beautiful flowers and rapid growth. It is often found in freshwater bodies.

2. **Analyzing Option A**:
- The statement mentions that all three types of vegetative parts are modified in water hyacinth.
- **True**: In water hyacinth, the stem, leaves, and roots are all modified to adapt to its aquatic environment. The stem is spongy to help it float, the leaves are broad and flat to capture sunlight, and the roots are modified for buoyancy and nutrient absorption.

3. **Analyzing Option B**:
- The statement claims that the root system shows a pocket-like structure.
- **True**: The roots of water hyacinth are indeed modified into a pocket-like structure that helps in buoyancy and provides stability in the water.

4. **Analyzing Option C**:
- The statement states that the flower is a modified shoot.
- **True**: In water hyacinth, the flower is indeed a modified shoot, which is adapted for reproduction and is borne above the water surface to attract pollinators.

5. **Conclusion**:
- Since all three options (A, B, and C) are true regarding water hyacinth, the correct answer is option D: "All of the above."

### Final Answer:
The correct answer is **D: All of the above**.