Which of the following is a correct pair?

Options

A. Cuscuta - Parasite
B. Dischidia - insectivorous
C. Opuntia - predator
D. Capsella - Hydrophyte

Explanation

To solve the question regarding which of the following is a correct pair, we will analyze each option provided:

1. **Cuscuta - Total Stem Parasite**:
- Cuscuta, commonly known as dodder, is indeed a total stem parasite. It does not have chlorophyll and cannot photosynthesize, relying entirely on the host plant for nutrients and water. This makes it a correct pair.

2. **Dysthetia - Insectivorous Plant**:
- Dysthetia is not recognized as an insectivorous plant. Insectivorous plants include species like pitcher plants and bladderworts. Therefore, this pair is incorrect.

3. **Apantia - Predator**:
- Apantia is not a predator; it is a xerophytic plant adapted to desert conditions. It has spines instead of leaves and is not classified as a predator. Thus, this pair is also incorrect.

4. **Capsula - Hydrophyte**:
- Capsula is not classified as a hydrophyte. Hydrophytes are plants that grow in water or wet conditions. This pair is incorrect as well.

After analyzing all the options, we conclude that the only correct pair is:

**Cuscuta - Total Stem Parasite**

### Final Answer:
The correct pair is **Cuscuta - Total Stem Parasite**.

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