Classifictaion Flashcards
Why do we need classification
Highlights the relatedness of a species
Provides common system organisms can be discussed accuracy
Bio nominal nomenclature
A system of naming living things using 2 words
Genus + species
Homo + sapien
Heirachy of Classification
Domain - Eukaryote Kingdom - Animalia Phylum - Chordata Class - Mammalia Order - Primates Family - Homidae Genus - Homo Species - Sapien
DKPCOFGS
De-Ko-Ph-Cu-Oo-F-Gu-ssss
Features of 5 Kingdoms
Plantae- multicellular, immobile, photosynthetic
Animalia- lack cell walls, mobile, multi cellular
Monera- single called, lack nuclei, prokaryotes
Fungi- cell walls made on chin tin, no stem/ leafs
Protista- unicellular or colonical, heterotrophs and autotrophic
Criteria for classification
Classified in distinguishing features - physical(colour)
- biochemical (make up of blood)
Lower down hierarchy the more specific the criteria is
Dichotomous key
A way to identify the living things based on physical characteristics
Each stage of identification splits into 2
Choice of criteria chosen is important some can be ambiguous (size, habitat)
Phylogenetic trees
Show ancestral lineage of living things common ancestors are shown and the time of evolution can be shown
Cladograms
Types of phylogenetic trees
Species that are more closely related are separated by a smaller distance in diagram
Autotroph
“Self feeding”
2 types
Photosynthetic
Chemosynthetic ( bacteria)
Heterotroph
Carnivores
Herbivores
Omnivores
What is the formula for photosynthesis
6CO2 + 6H2O —> C6H12O6 + 6O2
What is the significance of photosynthesis in the living world
Allowed light energy to be converted to chemical energy( glucose)
Production of oxygen allowed a range of organisms to evolve utilising aerobic respiration
Allowed biodiversity to dramatically increase
Food webs become more complex
Eukaryote
A complex type of cell with a nucleus and membrane- bound organelles
Prokaryote
A simple type of cell that lacks a nucleus and membrane- bound organelles
