Flashcards in Chapter 9: Biological Diversity Deck (27):
The naming and classification of species.
The two-part naming system for species. First is genus, second is species.
Kingdom, phylum, class, order, family, genus, and species.
Archae, Eukarya, Bacteria (Monera is not used anymore because prokaryotes themselves have a lot of diversity and need to be categorized separately).
Prokaryotes, includes extremophiles (organisms that can live in extreme environments).
Prokaryotes, often decomposers, and some undergo conjugation.
Includes all organisms who have nucleus in their cells, as well as the four original kingdoms: protista, plantae, animalia, and fungi.
Kingdom that includes all eukaryotes, and organisms that do not fit into the plantae or fungi kingdoms. Can be multi or single celled, and heterotrophs or autotrophs. Some may undergo conjugation, and some may contain serious diseases.
Kingdom that consists of heterotrophs and eukaryotes. Secrete hydrolytic enzymes, and cell walls contain chitin, not cellulose. Important in ecosystem as decomposers.
Kingdom that consists of autotrophic eukaryotes.
Kingdom that consists of heterotrophic multicellular eukaryotes. They reproduce with sexual reproduction and all have a common ancestor.
The most basic unit of life.
A collection of cells that perform a similar function.
A collection of tissues that work together to perform related functions.
- No head
- No symmetry
- Two cell layers (ectoderm and endoderm)
- No true tissues
- Life in water
- No organ systems
- Bilateral symmetry
- Has a head
- Three cell layers (ectoderm, endoderm, mesoderm)
- True tissues
- Life on land and water
- Many organ systems and specialization
Innermost layer that eventually develops into the guts and digestive system.
Outermost layer that eventually develops into the skin and the nervous system.
Middle layer that eventually develops into the blood and bones.
The symmetry over a single line. More complex organisms exhibit this.
Study of the evolutionary history of the relationships between species.
Phylogenetic Tree or Cladogram
A visual reconstruction of the phylogeny (evolutionary history) of a species.
The principle phylogenists usually follow when making phylogenies. Make the phylogeny the simplest possible that still coincides with the facts.
Shared Ancestral Trait
A characteristic that an organism shares with its common ancestors.