Haeckel kept Bacteria, Algae, Fungi and Protozoans in kingdom

Options

A. Plantae
B. Protista
C. Protista and plantae
D. Animalia

Answer

**Step-by-Step Solution:**

1. **Understanding Haeckel's Classification**: Haeckel proposed a three-kingdom classification system for living organisms. The three kingdoms he established are Protista, Plantae, and Animalia.

2. **Identifying the Organisms**: The question lists four groups of organisms: bacteria, algae, fungi, and protozoans. We need to determine which kingdom Haeckel placed these organisms in.

3. **Analyzing the Kingdoms**:
- **Kingdom Plantae**: This kingdom primarily includes multicellular plants that perform photosynthesis.
- **Kingdom Animalia**: This kingdom consists of multicellular animals that are heterotrophic.
- **Kingdom Protista**: This kingdom is a diverse group that includes unicellular and simple multicellular organisms. It encompasses bacteria, algae, fungi, and protozoans.

4. **Conclusion**: Since bacteria, algae, fungi, and protozoans are all included in the characteristics of Kingdom Protista, we can conclude that Haeckel kept these organisms in the kingdom Protista.

5. **Final Answer**: The correct option is B. Protista.

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