Diversity 1 Flashcards
What is Biodiversity?
Biodiversity is the number and variety of species and ecosystems on Earth.
What is a species?
A species is a group of organisms capable of breeding freely with each other under natural conditions and producing viable and fertile offspring.
What is Taxonomy?
Taxonomy is the science of classifying all organisms, both living and fossil.
What is Binomial Nomenclature?
A system used to classify species where the genus name is the first name and the specific name is the second name.
What are the taxonomic ranks?
Domain, Kingdom, Phylum, Class, Order, Family, Genus, Species
What did Carl Linnaeus do?
Carl Linnaeus invented the system of binomial nomenclature, and grouped species into taxonomic levels based on shared characteristics. He only recognized plants and animals as distinct kingdoms.
What are some traits of prokaryotes?
- No nucleus, no membrane bound organelles, no membrane bound DNA
- In Eubacteria and Archaea kingdoms
- Many are anaerobic (do not require oxygen)
- Always unicellular
- Do not divide by mitosis/meiosis
What are some traits of eukaryotes?
- Nucleus, membrane bound organelles, membrane bound DNA
- In Fungi, Protista, Animalia, and Plantae kingdoms
- Divide by mitosis/meiosis
- Most are aerobic (require oxygen)
- Can be unicellular or multicellular
What is a Taxon?
A taxon is a taxonomic level. It groups species based off shared characteristics. Each taxonomic rank is a taxon.
Modern Cell Theory:
- All living things are made of 1 or more cells
- Cells are the basic functional/structural units of life
- All cells arise from the division of pre-existing cells
What is an Autotroph?
An organism which produces its own food.
What is a Heterotroph?
An organism which eats other things as food.
What are the traits of the animalia kingdom?
- Heterotrophs
- Eukaryotes
- Multicellular
What are the traits of the plantae kingdom?
- Autotrophs
- Eukaryotes
-Multicellular
- Cell wall
What are traits of the fungi kingdom?
- Eukaryotes
- Heterotrophs
- Unicellular / Multicellular
- Cell wall