Phylum Profiles

Meghan Sloop


  • Phylum: Porifera (Sponges)
  • Characteristics: Asymmetrical, no true tissue system. Reproduce asexually through budding, or sexually.

  • Phylum: Cnidaria (Hydrozoans)
  • Characteristics: Organized tissue made of 2 layers— Epidermis and gastrodermis. Can reproduce sexually and asexually. Radially symmetrical.

  • Phylum: Platyhelminthes (Flatworms and tapeworms)
  • Characteristics: Bilaterally symmetrical; 3-layer tissue system; may produce sexually or asexually
  • Additional: 12,000 species, main habitat: earth/water

  • Phylum: Nematoda (roundworms)
  • Characteristics: Reproduce sexually; bilaterally symmetrical; body has more than two cell layers with tissues and organs.
  • Additional: 12,000 species, main habitat: earth/water
  • Phylum: Rotifera (Wheel animals)
  • Characteristics: Bilaterally symmetrical; more than two cell layers with tissues and organs; parthenogenesis is most common for reproduction. May also reproduce sexually.
  • Phylum: Mollusca (snails, seas slugs)
  • Characteristics: Bilaterally symmetrical, more than two cell layers with tissues and organs; sexual reproduction
  • Additional: Over 100,000 species, main habitat: earth/water
  • Phylum: Annelida (earthworms)

  • Characteristics: Reproduction is sexual or asexual; bilaterally symmetrical; more than two cell layers with tissues and organs.
  • Additional: 12,000 species, main habitat: earth

  • Phylum: Arthropoda (insects, arachnids, myriapods, and crustaceans.)
  • Characteristics: Symmetry is bilateral, 3 tissue layers, reproduce sexually

  • Phylum: Echinodermata (starfish, sea urchins, sand dollars, and sea cucumbers, sea lilies)
  • Characteristics: Radial symmetry, 3 tissue layers, reproduce sexually

  • Phylum: Chordata (fish, amphibians, reptiles, birds and mammals)
  • Characteristics: Bilateral symmetry, 3 tissue layers, reproduce sexually