Which of the following is a parasite?

Options

A. Venus flytrap
B. Pitcher plant
C. Sundew
D. Dodder

Answer

To determine which of the given options is a parasite, we need to analyze each option based on their nutritional habits.

### Step-by-Step Solution:

1. **Identify the Options**: The options given are Venus flytrap, pitcher plant, sundew, and dodder.

2. **Analyze Venus Flytrap**:
- The Venus flytrap is known for its ability to trap and digest insects.
- It is classified as a partially heterotrophic plant because it uses this method to supplement its nitrogen intake.
- However, it is not a parasite because it does not derive nutrients from another living organism in a harmful way.

3. **Analyze Pitcher Plant**:
- The pitcher plant also captures insects for nutrients.
- It is both autotrophic (due to chlorophyll) and heterotrophic (due to its insect-eating behavior).
- Similar to the Venus flytrap, it is not a parasite as it does not rely on another plant for nutrients.

4. **Analyze Sundew**:
- Sundew plants are carnivorous and trap insects using sticky hairs on their leaves.
- They are also not classified as parasites since they do not extract nutrients from another plant.

5. **Analyze Dodder**:
- Dodder is a true parasitic plant.
- It does not have chlorophyll and relies entirely on other plants for nutrients by attaching itself and extracting water and nutrients from them.
- This makes dodder the correct answer as it is a parasite.

### Conclusion:
The correct answer is **Dodder**, as it is the only option that represents a parasitic plant.

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