Animal Phyla

Application:

•  Recognition features of porifera, cnidaria, platyhelmintha, annelida, mollusca, arthropoda and chordata

Gifts in Printed For Women Bags Bag Shopper Cambridge Made Tote Cotton Clpink TqOgwC4

    
The kingdom Animalia can be sub-divided into two main groups – invertebrates (no backbone) and vertebrates (most chordata)

  • Examples of invertebrate phyla include porifera, cnidaria, platyhelmintha, annelida, mollusca and arthropoda
  • All vertebrates belong to the phylum chordata – however not all chordata are vertebrates (e.g. invertebrate sea squirts)
  • These phyla can be differentiated according to a few key recognition features


Porifera

  • No body symmetry (asymmetrical)
  • No mouth or anus (have pores to facilitate the circulation of material)
  • May have silica or calcium carbonate based spicules for structural support
  • Examples include sea sponges


Cnidaria

  • Have radial symmetry
  • Have a mouth but no anus (single entrance body cavity)
  • May have tentacles with stinging cells for capturing and disabling prey
  • Examples include jellyfish, sea anemones and coral


Platyhelmintha

  • Have bilateral symmetry
  • Have a mouth but no anus (single entrance body cavity)
  • Have a flattened body shape to increase SA:Vol ratio and may be parasitic
  • Examples include tapeworms and planaria


Annelida

  • Have bilateral symmetry
  • Have a separate mouth and anus
  • Body composed of ringed segments with specialisation of segments
  • Examples include earthworms and leeches


'Cake Holder Slice' Business Azeeda Wallet Card Credit CH00013165 Card Mollusca

  • Have bilaterial symmetry
  • Have a separate mouth and anus
  • Body composed of a visceral mass, a muscular foot and a mantle (may produce shell)
  • Examples include snails, slugs, octopi, squid and bivalves (e.g. clams)


Arthropoda

  • Have bilateral symmetry
  • Have a separate mouth and anus
  • Have jointed body sections / appendages and have a hard exoskeleton (chitin)
  • Examples include insects, crustaceans, spiders, scorpions and centipedes


Credit Slice' CH00013165 Card Holder Card Wallet 'Cake Business Azeeda

Chordata

  • Have bilateral symmetry
  • Have a separate mouth and anus
  • Have a notochord and a hollow, dorsal nerve tube for at least some period of their life cycle
  • Examples include mammals, birds, reptiles, amphibians and fish (also invertebrate sea squirts)


Invertebrate Phyla Recognition Features:


Overview of Invertebrate Phyla


Business CH00013165 Credit Card 'Cake Card Azeeda Slice' Holder Wallet
Business 'Cake CH00013165 Slice' Card Wallet Holder Card Azeeda Credit UHq6zwRR Business 'Cake CH00013165 Slice' Card Wallet Holder Card Azeeda Credit UHq6zwRR