Cyanobacteria and heterotrophic bacteria have been clubbed together in eubacteria of kingdom Monera as per the Whittaker's 'Five Kingdom Classification' even though the two are vastly different from each other. Is this grouping of the two types of taxa in the same kingdom justified? Is so why?

Explanation

### Step-by-Step Solution

1. **Understanding the Classification**: The question refers to Whittaker's Five Kingdom Classification, which categorizes living organisms into five kingdoms: Monera, Protista, Fungi, Plantae, and Animalia. In this classification, both cyanobacteria and heterotrophic bacteria are placed under the kingdom Monera.

2. **Identifying the Organisms**:
- **Cyanobacteria**: Also known as blue-green algae, cyanobacteria are photoautotrophic organisms. This means they can perform photosynthesis to produce their own food using sunlight, carbon dioxide, and water.
- **Heterotrophic Bacteria**: These bacteria cannot perform photosynthesis and rely on other organisms for their nutrition. They can be classified as decomposers, parasites, or saprophytes.

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