Biological Diversity Flashcards
Taxonomy
A system by which we name & classify all organisms, living & extinct
Binomial Nomenclature
System used today by Carl von Linne, every organism has 2-part name
Domains
Bacteria, Archaea, Eukarya
Four kingdoms of Eukarya
Protista
Fungi: yeast, mold, mushrooms
Plantae: mosses, ferns, flowering plants
Animalia
Evolutionary Trends in Animals
Specialized Cells, Tissues & Organs Germ Layers Body Symmetry Development of Head Body Cavity Formation
Tissue
Group of similar cells that perform one function
Sciatic nerve
Organ
Group of issues that work together to perform related functions
Germ Layers
Main layers, form various tissues & organs of the body, formed in embryonic development
Ectoderm
Outermost layer, becomes skin & nervous system
Nerve cord + brain
Endoderm
Innermost layer, becomes viscera (guts) or digestive system
Mesoderm
Middle layer, becomes blood, muscles & bones
Coelom
A fluid-filled body cavity that is completely surrounded by mesoderm tissue
Provides space for elaborate organ systems
Ex: digestive tract or cardiovascular system
Porifera
Sponges
Cnidarians
Hydra & Jellyfish
Platyhelminthes
Flatworms including Tapeworms
Nematodes
Roundworms
Annelids
Segmented Worms like Earthworms, Leeches
Mollusks
Squids, Octopuses, Slugs, Clams, and Snails
Arthropods
Insecta (Grasshopper), Crustacea (Shrimp, crab), Arachnida (Spider)