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Questions and Answers
What was the primary basis for the earliest classification of organisms?
What was the primary basis for the earliest classification of organisms?
- Behavioral traits
- Morphological characters (correct)
- Their color
- Their ability to move
What did Linnaeus' Two Kingdom system primarily distinguish between?
What did Linnaeus' Two Kingdom system primarily distinguish between?
- Plants and animals (correct)
- Prokaryotes and eukaryotes
- Unicellular and multicellular organisms
- Photosynthetic and non-photosynthetic organisms
Why was the two kingdom classification system eventually found inadequate?
Why was the two kingdom classification system eventually found inadequate?
- It did not include viruses
- It was based on chemical properties
- A large number of organisms did not fit into either category (correct)
- It was unable to classify bacteria properly
Which criteria were later felt necessary to include for classification besides gross morphology?
Which criteria were later felt necessary to include for classification besides gross morphology?
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The need to classify organisms arose due to a need for what?
The need to classify organisms arose due to a need for what?
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Study Notes
Classification of Organisms
- The primary basis for the earliest classification of organisms was morphology, or the shape and structure of an organism.
Linnaeus' Two Kingdom System
- Linnaeus' Two Kingdom system primarily distinguished between Plantae (plants) and Animalia (animals).
Limitations of the Two Kingdom System
- The two kingdom classification system was eventually found inadequate because it did not account for microorganisms and other organisms that did not fit into either kingdom.
Criteria for Classification
- Besides gross morphology, criteria such as cell structure, metabolism, and reproductive features were later felt necessary to include for classification.
Need for Classification
- The need to classify organisms arose due to the need to identify, understand, and organize the vast diversity of life on Earth.
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