html5-img
1 / 13

Group the following in any way you would like, but justify your grouping!

Biological Classification By Dr. Sunetra Kshirsagar (Lokmangal Science & Entrepreneurship College, Wadala). Group the following in any way you would like, but justify your grouping!. Frogs Bears Ants Spiders Bacteria . Humans Dolphins Sharks Mushrooms Pine Trees. Why do we Classify?.

Ava
Download Presentation

Group the following in any way you would like, but justify your grouping!

An Image/Link below is provided (as is) to download presentation Download Policy: Content on the Website is provided to you AS IS for your information and personal use and may not be sold / licensed / shared on other websites without getting consent from its author. Content is provided to you AS IS for your information and personal use only. Download presentation by click this link. While downloading, if for some reason you are not able to download a presentation, the publisher may have deleted the file from their server. During download, if you can't get a presentation, the file might be deleted by the publisher.

E N D

Presentation Transcript

  1. Biological ClassificationBy Dr. Sunetra Kshirsagar(Lokmangal Science & Entrepreneurship College, Wadala)

  2. Group the following in any way you would like, but justify your grouping! • Frogs • Bears • Ants • Spiders • Bacteria • Humans • Dolphins • Sharks • Mushrooms • Pine Trees

  3. Why do we Classify? • Recognize similarities between living things (DNA, biomolecules, cells) • Group organisms according to those similarities • Taxonomy: the science of classifying organisms

  4. Who created Taxonomy? • Aristotle was the first scientist to group organisms based on physical characteristics • Carolus Linnaeus (1707 – 1778) a Swedish botanist , came up with the current system.

  5. Classification Groups • The groups (largest to smallest) • Domain • Kingdom • Phylum • Class • Order • Family • Genus • Species • A sentence to help you remember! • Dear • King • Philip • Came • Over • For • Good • Soup

  6. Levels of Classification: The 3 Domains (based on cell type)

  7. Based on… Cell type Number of Cells Mode of Feeding Levels of Classification: The 5 Kingdoms

  8. Final 7 Levels of Classification 1 is Largest- 7 is Smallest

  9. Examples of Classification Common Pond Amoeba • KINGDOM: Protista • PHYLUM: Sarcomastigophora • CLASS: Sarcodina • ORDER: Granulopodea • FAMILY: Amoebidae • GENUS: Amoeba • SPECIES: Amoeba proteus

  10. Examples of Classification Humans • KINGDOM: Animalia (animal cells, heterotroph) • PHYLUM: Chordata (all vertebrates) • CLASS: Mammalia (all mammals) • ORDER: Primata (all primates) • FAMILY: Hominidae (bipedal primates) • GENUS: Homo (humans and neanderthals) • SPECIES: Homo sapiens (humans only!)

  11. Binomial Nomenclature • Binomial Nomenclature - the formal system of naming species. (Bi = two, nomial = names) • The last two classification groups (genus and species) are used to create a unique name for each species. • Because we use two groups for the name, similar species will have similar names. • Example: Ursusarctos (Grizzly Bear) and Ursusmaritimus (Polar Bear) • In a species name, only the Genus is capitalized. • Latin is the language used to make these names. Since it is no longer spoken anywhere, we do not have to worry about it changing.

  12. What evidence is used to classify? • Homologous (similar) Structures • Ex: The bones in a bat’s wing are almost the same as the bones in a human hand • Similar Behaviors • Ex: All mammals nurse their young • Similarities in genes (DNA or protein sequence) • Ex: Human and Primate DNA is 99% similar

  13. Evidence for Classification • Fossil Record: Past organisms studied through fossils • Ex: Trilobites and horsehoe crabs • Embryology: similar development patterns in unborn of different species • Ex: Dolphin limb buds • Hybridization: ability to successfully interbreed different species. • Ex: Zorse

More Related