Flashcards in Biodiversity Deck (26):
What is biodiversity?
Biodiversity not only measures species richness but also the amount of individuals within each species in an area, region, or habitat.
What the hierarchical classification system?
7 levels of taxonomic structure based on characteristics (morphology, embryology,biochemical methods)
What are the 7 taxons in the hierarchical classification system?
What are the five kingdoms?
What is the definition for species?
A group of individuals that can successfully interbreed to produce a fertile offspring.
What is phylogenetic classification system?
The three domains system
What is the phylogenetic classification based on?
Evolutionary history and the theory that all species evolve from one common ancestor
What are the 3 domains?
What are the 6 kingdoms in the 3 domains system?
What are the kingdoms in the bacteria domain?
What are the kingdoms in the archaea domain?
What are the kingdoms in eukarya?
Animalistic, plantae, protoctista, fungi
What is the three domains based on?
Based on differences in ribosomal RNA structure
Multicellular, heterotrophic, nervous system (can move)
Multicellular, autotrophic, cellulose cell walk, sap filled vacuoles
Generally multicellular, saprobioant, chitin cell wall
Eukaryotic organismsms, autotrophic and heterotrophic
Unicellular, autotrophic, no membrane bound organelles
Same structures different functions
Example of adaptive radiation
Different structures but same function
Due to convergent evaluation
What are extremophiles?
An organism that can survive in extreme conditions that most organisms wouldn’t survive in
Steps for natural selection:
1) overproduction of offspring without an increase in population (struggle to survive)
2) variations occur in offsprings
3)Due to competition and a struggle to survive offsprings with beneficial characteristics survive
4) survivors reproduce and pass on characteristics
5)the number of individuals increases over generations
What is DNA base sequencing?
The order of the nucleotides in the DNA
What happens if a population of a species is split up?
Mutation change the sequence of DNA nucleotides and are random so the longer the populations have been isolated the more differences there will be in the base sequences of the DNA
What is a mass extinction event?
An event that causes the majority of species to go extinct