Taxonomy refers to the science of classification of living organisms. The five Kingdom Classification system was widely used from 1920 to 1980. Explain why this classification system was abandoned in favor of the 3-domain system

Human Anatomy & Physiology (11th Edition)
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Taxonomy refers to the science of classification of living organisms. The five Kingdom Classification system was widely used from 1920 to 1980.

Explain why this classification system was abandoned in favor of the 3-domain system.

**Taxonomy and the Five Kingdom Classification System**

Taxonomy refers to the science of classification of living organisms. The five Kingdom Classification system was widely used from 1920 to 1980.

**Diagram Explanation:**

The diagram represents the Five Kingdom Classification system developed by Robert Harding Whittaker. It is depicted as a tree with five branches, each representing a distinct kingdom:

1. **Plants:**
   - Eukaryotic, multicellular organisms.
   - Capable of photosynthesis.
   - Nonmotile and reproduce sexually.

2. **Animals:**
   - Eukaryotic, multicellular organisms.
   - Ingest food.
   - Motile and reproduce sexually.

3. **Fungi:**
   - Eukaryotic, multicellular organisms.
   - Absorb nutrients.
   - Nonmotile and reproduce sexually.

4. **Protists:**
   - Eukaryotic, can be unicellular or multicellular.
   - Can absorb, ingest, or photosynthesize food.
   - Sexual and asexual reproduction.

5. **Monera:**
   - Prokaryotic, unicellular organisms.
   - Absorb and photosynthesize nutrients.
   - Can be motile or nonmotile.
   - Asexual reproduction.

**Robert Harding Whittaker (1920 – 1980):**

He is the scientist credited with developing the five Kingdom Classification system.

**Question Prompt:**

Explain why this classification system was abandoned in favor of the 3-domain system.
Transcribed Image Text:**Taxonomy and the Five Kingdom Classification System** Taxonomy refers to the science of classification of living organisms. The five Kingdom Classification system was widely used from 1920 to 1980. **Diagram Explanation:** The diagram represents the Five Kingdom Classification system developed by Robert Harding Whittaker. It is depicted as a tree with five branches, each representing a distinct kingdom: 1. **Plants:** - Eukaryotic, multicellular organisms. - Capable of photosynthesis. - Nonmotile and reproduce sexually. 2. **Animals:** - Eukaryotic, multicellular organisms. - Ingest food. - Motile and reproduce sexually. 3. **Fungi:** - Eukaryotic, multicellular organisms. - Absorb nutrients. - Nonmotile and reproduce sexually. 4. **Protists:** - Eukaryotic, can be unicellular or multicellular. - Can absorb, ingest, or photosynthesize food. - Sexual and asexual reproduction. 5. **Monera:** - Prokaryotic, unicellular organisms. - Absorb and photosynthesize nutrients. - Can be motile or nonmotile. - Asexual reproduction. **Robert Harding Whittaker (1920 – 1980):** He is the scientist credited with developing the five Kingdom Classification system. **Question Prompt:** Explain why this classification system was abandoned in favor of the 3-domain system.
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