Chordata

• How many described species of animals are there?

  About 1.4 million species
• Why is there a need for zoologists to specialize?

  It's impossible to specialize in over one million species
• What are the sub-disciplines of Zoology based on taxonomy?

  • Protozoology: study of protozoa
  • Entomology: study of insects
  • Malacology: study of molluscs
  • Carcinology: study of crustaceans
  • Ichthyology: study of fishes
  • Herpetology: study of amphibians
  • Ornithology: study of birds
  • Mammalogy: study of mammals
• What is the branch of zoology that studies classification called?

  Systematics
• What is a taxon?

  An assemblage sharing particular characteristics
• What is the scientific classification of animals known as?

  Taxonomy
• What is the modern system of animal classification called?

  Binomial nomenclature
• Who developed the binomial nomenclature system?

  Karl von Linne (Carrolus Linnaeus)
• What does the first part of a binomial name indicate?

  The genus of the organism
• How should binomial names be formatted?

  Italicized or underlined if handwritten
• What is the genus name for the lion?

  Panthera
• What is the species name for the lion?

  leo
• What does the International Code of Zoological Nomenclature (ICZN) stipulate?

  No two animals have the same binomial name
• Why use binomial names instead of common names?

  • Common names vary by locality and language
  • Binomial names provide consistency globally
  • Common names may refer to higher taxonomic categories
• How does a binomial name help in scientific communication?

  It standardizes names across languages
• What is a limitation of common names in taxonomy?


  They can refer to higher taxonomic categories
• What is the largest kingdom on Planet Earth?

  Kingdom Animalia
• How many taxonomic groups are in the animal kingdom?

  Seven taxonomic groups
• What is the largest taxonomic group in the animal kingdom?

  Phylum
• What is the smallest taxonomic unit in the animal kingdom?

  Species
• What does each phylum in the Kingdom Animalia consist of?

  Many classes
• What does each class in the animal kingdom consist of?

  Many orders
• What does each order in the animal kingdom consist of?

  Many families
• What does each family in the animal kingdom consist of?

  Many genera
• What does each genus in the animal kingdom consist of?

  Many species
• What is a characteristic of a phylum compared to the kingdom?

  More characteristics in common
• What is a characteristic of a class compared to a phylum?

  More characteristics in common
• Describe the taxonomic groups: order, family, genus, and species.

  • Order: Group of families
  • Family: Group of genera
  • Genus: Group of species
  • Species: Individual organisms
• What are invertebrate animals?

  Animals without backbones
• What are vertebrate animals?

  Animals with backbones
• How are animals divided based on embryonic layers?

  Into triploblastic and diploblastic
• What are triploblastic animals?

  Animals with three embryonic layers
• What are diploblastic animals?

  Animals with two embryonic layers
• What unique feature do diploblastic animals possess?

  Structureless feature known as mesoglea
• What is a coelom?

  A fluid-filled body cavity
• How are phyla in the animal kingdom divided based on coelom?

  Into acoelomate, pseudocoelomate, and coelomate
• What are acoelomate phyla?

  Phyla without coelom
• What are pseudocoelomate phyla?

  Phyla with a second body cavity
• What are coelomate phyla?

  Phyla with true coelom