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What is the term used to describe the number and types of organisms present on earth?
What is the term used to describe the number and types of organisms present on earth?
What is the estimated range of known and described species on earth?
What is the estimated range of known and described species on earth?
What is the term used to describe a group of similar species that can interbreed?
What is the term used to describe a group of similar species that can interbreed?
Which of the following is a category above the species level in biological classification?
Which of the following is a category above the species level in biological classification?
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What is the term used to describe a group of related genera?
What is the term used to describe a group of related genera?
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What is the term used to describe a group of related families?
What is the term used to describe a group of related families?
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Which of the following is a category below the genus level in biological classification?
Which of the following is a category below the genus level in biological classification?
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What is the purpose of biological classification?
What is the purpose of biological classification?
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What is the term used to describe a group of related orders?
What is the term used to describe a group of related orders?
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Which of the following is not a category in the biological classification hierarchy?
Which of the following is not a category in the biological classification hierarchy?
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Study Notes
Taxonomic Categories
- A species is a group of individual organisms with fundamental similarities.
- Specific epithets (e.g., indica, tuberosum, leo) represent different organisms within a genus.
- A genus (e.g., Mangifera, Solanum, Panthera) is a higher level of taxon, comprising related species.
- Each genus may have one or more specific epithets representing different organisms.
Species
- Mangifera indica, Solanum tuberosum (potato), and Panthera leo (lion) are examples of species.
- Human beings belong to the species sapiens, grouped in the genus Homo, with the scientific name Homo sapiens.
Genus
- A genus comprises a group of related species with more characters in common compared to species of other genera.
- Examples of genera include Solanum (potato, brinjal) and Panthera (lion, leopard, tiger).
Family
- A family is a group of related genera with still fewer similarities compared to genus and species.
- Examples of families include Solanaceae (Solanum, Petunia, Datura) and Felidae (Panthera, Felis).
Order
- Order is a higher category, identified based on the aggregates of characters.
- Examples of orders include Polymoniales (Convolvulaceae, Solanaceae) and Carnivora (Felidae, Canidae).
Class
- A class includes related orders.
- Examples of classes include Mammalia (order Primata, order Carnivora) and others.
Phylum
- A phylum is the next higher category, comprising classes.
- Examples of phyla include Chordata (classes Mammalia, Amphibia, Reptilia, Aves).
Biodiversity
- The number of species known and described ranges between 1.7-1.8 million.
- New organisms are continuously being identified as we explore new areas.
Definition of Living Organisms
- The question "what is living?" is a technical one, seeking an answer to what living is as opposed to non-living.
- As scientists, we focus on the technical aspect of this question, rather than the philosophical one.
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Description
This quiz covers the concept of species in biological classification, including identifying similarities and differences among organisms and distinguishing between closely related species.
