Decomposers like fungi and bacteria are
(i) Autotrophs (ii) Heterotrophs
Saprotrophs
(iv) Chemo-autotrophs
Choose the correct answer

Options

A. (i) and (iii)
B. (i) and (iv)
C. (ii) and (iii)
D. (i) and (ii)

Answer

To solve the question regarding decomposers like fungi and bacteria, we need to analyze the options provided and understand the definitions of each term.

### Step-by-Step Solution:

1. **Understand the Definition of Autotrophs**:
- Autotrophs are organisms that can produce their own food using inorganic substances. They typically use processes like photosynthesis (e.g., plants and cyanobacteria).
- **Hint**: Think about which organisms can make their own food.

2. **Understand the Definition of Heterotrophs**:
- Heterotrophs are organisms that cannot produce their own food and must obtain it by consuming other organisms. This includes animals that eat plants or other animals.
- **Hint**: Consider organisms that rely on others for nutrition.

3. **Understand the Definition of Saprotrophs**:
- Saprotrophs are a specific type of heterotroph that feed on dead organic matter, such as decaying plants and animals. Fungi and bacteria fall into this category as they decompose dead material.
- **Hint**: Focus on organisms that break down dead matter.

4. **Understand the Definition of Chemo-autotrophs**:
- Chemo-autotrophs are organisms that obtain energy by oxidizing inorganic substances (like sulfur) and use that energy to produce their own food. They are not relevant to fungi and bacteria.
- **Hint**: Think about organisms that use chemicals instead of sunlight for energy.

5. **Analyze the Question**:
- The question asks about decomposers like fungi and bacteria. Since they feed on dead organic matter, they fit the definition of saprotrophs.
- Therefore, the correct answer is that decomposers like fungi and bacteria are **saprotrophs**.

### Final Answer:
The correct answer is **(iii) Saprotrophs**.