Ingestive nutrition is

Options

A. Holozoic
B. Phagotrophic
C. Both A and B
D. Holophytic.

Answer

### Step-by-Step Solution:

1. **Understanding Nutrition**:
- Nutrition is the process of obtaining food necessary for health and growth. It can be classified into two main types: autotrophic and heterotrophic nutrition.

2. **Types of Nutrition**:
- **Autotrophic Nutrition**: Organisms that can produce their own food (e.g., plants through photosynthesis).
- **Heterotrophic Nutrition**: Organisms that obtain food from other sources (e.g., humans and animals).

3. **Types of Heterotrophic Nutrition**:
- Heterotrophic nutrition can be further divided into three categories:
- **Holozoic Nutrition**: Involves ingestion of solid and liquid food, followed by digestion and absorption.
- **Saprophytic Nutrition**: Organisms feed on dead organic matter.
- **Parasitic Nutrition**: Organisms feed on living hosts.

4. **Defining Holozoic Nutrition**:
- Holozoic nutrition is also known as ingestive nutrition. It involves a step-by-step process:
- **Ingestion**: Taking in food.
- **Digestion**: Breaking down food into simpler substances.
- **Absorption**: Taking in the nutrients.
- **Assimilation**: Using the absorbed nutrients.
- **Excretion**: Removing waste products.

5. **Defining Phagotrophic Nutrition**:
- Phagotrophic nutrition involves the engulfing of large food particles by cells, where digestion occurs inside the cells.

6. **Conclusion**:
- Since both holozoic and phagotrophic nutrition involve the process of ingestion, the correct answer to the question "Ingestive nutrition is" is **both A and B** (holozoic and phagotrophic).

### Final Answer:
Ingestive nutrition is both A (holozoic) and B (phagotrophic).

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