Levels of Classification
Biology ⇒ Biological Classification
Levels of Classification starts at 7 and continues till grade 12.
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See sample questions for grade 12
A biologist discovers a new organism. To which taxonomic category should the biologist assign it first?
Arrange the following taxonomic categories in ascending order: Class, Species, Family, Genus, Order, Kingdom, Phylum.
Describe the difference between 'division' and 'phylum' in biological classification.
Describe the importance of using scientific names instead of common names in classification.
Describe the relationship between 'family' and 'genus' in the taxonomic hierarchy.
Explain the difference between 'species' and 'genus' in biological classification.
Explain the significance of the 'domain' category in modern classification systems.
Explain why classification systems have changed over time.
Explain why the species is considered the basic unit of classification.
What is the main purpose of biological classification?
Which taxonomic category comes immediately above 'Genus'?
Which taxonomic category directly follows 'Order' in the hierarchy?
Which taxonomic category is more specific than 'Order' but less specific than 'Genus'?
Which taxonomic rank is used to group closely related species?
A newly discovered organism shares 95% of its DNA with members of the genus Canis, but differs significantly in morphology and behavior. Based on the levels of classification, discuss the possible taxonomic implications and what additional evidence would be needed to assign it to a species, genus, or higher category.
Discuss how molecular data (such as DNA or protein sequences) have influenced the modern levels of biological classification. Provide at least two examples where molecular evidence led to reclassification at the family or higher taxonomic levels.
Explain the concept of a 'polyphyletic group' and why such groups are avoided in modern classification. Provide an example.
