Nitrosomonas and Nitrobacter like nitrifying bacteria are members of

Options

A. trophic level -1
B. trophic level -2
C. trophic level -5
D. none correct

Answer

To solve the question regarding the classification of Nitrosomonas and Nitrobacter, we can follow these steps:

### Step-by-Step Solution:

1. **Identify the Organisms**: Nitrosomonas and Nitrobacter are both types of nitrifying bacteria.

2. **Understand Nitrification**: Nitrifying bacteria are involved in the process of nitrification, which is the conversion of ammonium ions (NH4+) into nitrites (NO2-) and then into nitrates (NO3-).

3. **Determine the Nutritional Mode**: These bacteria are autotrophic, meaning they can produce their own food through processes like nitrification.

4. **Classify into Trophic Levels**: In ecological terms, organisms that produce their own food (autotrophs) are classified as producers. Producers are placed at the first trophic level (Trophic Level 1) in an ecosystem.

5. **Select the Correct Option**: Since Nitrosomonas and Nitrobacter are autotrophic nitrifying bacteria, they belong to Trophic Level 1.

### Final Answer:
Nitrosomonas and Nitrobacter like nitrifying bacteria are members of Trophic Level 1.

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