Organisms that obtain food from host organisms is called _________ .

Options

A. saprophytes
B. autotrophs
C. consumers
D. parasites

Explanation

**Step-by-Step Solution:**

1. **Understanding the Question**: The question asks for the term used to describe organisms that obtain food from host organisms.

2. **Analyzing the Options**: We have four options to consider:
- **Saprophytes**: These are organisms that feed on dead or decaying matter.
- **Autotrophs**: These are organisms that produce their own food, typically through photosynthesis.
- **Consumers**: These organisms consume other organisms for energy, which can include both producers and other consumers.
- **Parasites**: These are organisms that live on or in a host organism and derive nutrients at the host's expense.

3. **Eliminating Incorrect Options**:
- **Saprophytes** can be eliminated because they do not feed on living hosts; they feed on dead matter.
- **Autotrophs** can be eliminated as they produce their own food and do not rely on other organisms for nutrition.
- **Consumers** are a broader category and do not specifically refer to those that live off a host.

4. **Identifying the Correct Answer**: The only option that accurately describes organisms that obtain food from a host is **parasites**. Parasites depend on their host for nutrition and often harm the host in the process.

5. **Final Answer**: Therefore, the answer to the question is **parasite**.

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