Parasitic mode of nutrition is

Options

A. Absorptive
B. Phagotropic
C. Both A and B
D. Holotrophic.

Answer

### Step-by-Step Solution:

1. **Understanding Parasitic Nutrition**:
- Parasitic mode of nutrition refers to a relationship where one organism (the parasite) derives its nutrients from another organism (the host). The parasite benefits at the expense of the host.

2. **Identifying the Types of Nutrition**:
- There are different modes of nutrition, including absorptive, phagotropic, and holotropic.
- **Absorptive Nutrition**: This involves the parasite absorbing nutrients directly from the host's body. The parasite typically attaches to the host and extracts nutrients through its surface.
- **Phagotropic Nutrition**: This involves the parasite engulfing or consuming the host's cells or tissues. This is similar to how amoebas consume food by engulfing it.
- **Holotropic Nutrition**: This is characterized by ingestion of food through the mouth or digestive system. This mode is not applicable to parasites as they do not ingest food in this manner.

3. **Evaluating the Options**:
- **Option A (Absorptive)**: Correct, as parasites absorb nutrients from their host.
- **Option B (Phagotropic)**: Correct, as some parasites can engulf their food from the host.
- **Option C (Both A and B)**: This option is correct because parasitic nutrition can involve both absorptive and phagotropic methods.
- **Option D (Holotropic)**: Incorrect, as this mode involves ingestion through a mouth, which is not how parasites obtain nutrients.

4. **Conclusion**:
- The correct answer is **Option C: Both A and B**. Parasitic nutrition can be classified as both absorptive and phagotropic.