Read the statements about heterotrophic plants.
I. These plants are not able to prepare their own food.
II. Heterotrophic plants are of two types saprophytic plant and parasitic plant.
III. Saprophytic plants grow on decaying matter.
Which of the statements given above are correct?

Options

A. I and II
B. II and III
C. III and I
D. All of these

Explanation

To determine which statements about heterotrophic plants are correct, let's analyze each statement step by step.

### Step-by-Step Solution:

1. **Understanding Heterotrophic Plants**:
- Heterotrophic plants are those that cannot produce their own food. Instead, they rely on other organisms (usually autotrophic plants) for their nutrition. This is a fundamental characteristic of heterotrophic plants.

**Hint**: Remember that heterotrophic means "other feeding," indicating these plants depend on others for food.

2. **Evaluating Statement I**:
- Statement I claims that "These plants are not able to prepare their own food." This is true, as heterotrophic plants do not have the ability to perform photosynthesis or produce their own food.

**Hint**: Think about how autotrophic plants make their food versus how heterotrophic plants obtain theirs.

3. **Evaluating Statement II**:
- Statement II states that "Heterotrophic plants are of two types: saprophytic plants and parasitic plants." This is also correct. Heterotrophic plants can be categorized into these two types based on their mode of nutrition.

**Hint**: Recall the definitions of saprophytic and parasitic plants to confirm this statement.

4. **Evaluating Statement III**:
- Statement III asserts that "Saprophytic plants grow on decaying matter." This is accurate. Saprophytic plants feed on dead and decaying organic matter, which is their primary source of nutrients.

**Hint**: Consider the role of decomposers in ecosystems and how they relate to saprophytic plants.

### Conclusion:
All three statements about heterotrophic plants are correct:
- Statement I is correct.
- Statement II is correct.
- Statement III is correct.

Thus, the answer is that all statements given are correct.

### Summary of Correct Statements:
- I: Correct
- II: Correct
- III: Correct

### Final Answer:
All three statements about heterotrophic plants are correct.