Which of the following group is essential component for survival of an ecosystem :-

Options

A. Producers
B. Producers and herbivores
C. Producers and decomposer
D. Detritivores

Answer

To determine which group is an essential component for the survival of an ecosystem, we need to analyze the roles of different groups within the ecosystem. Here’s a step-by-step solution:

### Step 1: Identify the Groups
The options provided are:
1. Producers
2. Producers and Herbivores
3. Producers and Decomposers
4. Detritivores

### Step 2: Understand the Role of Each Group
- **Producers**: These are typically plants and photosynthetic organisms that convert solar energy into chemical energy through photosynthesis. They form the base of the food chain.

- **Herbivores**: These are primary consumers that feed on producers. They play a crucial role in transferring energy from producers to higher trophic levels.

- **Decomposers**: These organisms, including bacteria and fungi, break down dead organic matter and recycle nutrients back into the ecosystem, making them available for producers again.

- **Detritivores**: These organisms feed on dead organic matter and play a role similar to decomposers in nutrient cycling.

### Step 3: Analyze the Options
- **Producers alone**: While they are essential for energy capture, they cannot sustain an ecosystem alone without consumers and decomposers.

- **Producers and Herbivores**: This combination is crucial for energy transfer, but it still lacks the nutrient recycling aspect.

- **Producers and Decomposers**: This combination is vital as it includes energy capture (producers) and nutrient recycling (decomposers), which are both essential for ecosystem sustainability.

- **Detritivores**: While they contribute to nutrient cycling, they are not as fundamental as the combination of producers and decomposers.

### Step 4: Conclusion
The most essential group for the survival of an ecosystem is **Producers and Decomposers**. They work together to ensure energy flow and nutrient cycling, which are critical for maintaining ecosystem balance.

### Final Answer
**Producers and Decomposers** are essential components for the survival of an ecosystem.

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