ZOOL 10 - REVIEW OF ANIMAL PHYLAcwh Sp96

Number of Level of Body Pattern of Sexual PHYLUM Species Habitats Complexity Symmetry Body Shape Body Cavity Development Reproduction

Protozoa 64,000 all habitats protoplasmic variable unicellular fission (asexual),or parasitic conjugation

serial monecious,

Porifera 5,000 marine & cellular assymetrical cell aggregate panmixia,

freshwater internal fertilization

dioecious,

Cnidaria 9,000 marine tissue radial blind sac panmixia,

external fertilization

marine & monecious,

Platyhelminthes 15,000 terrestrial, organ bilateral blind sac (acoelomate) protostome mutual copulation,

parasitic internal fertilization

dioecious,

Nematoda 12,000 - all habitats organ system bilateral tube within tube pseudocoel protostome penile stylet,

500,000 or parasitic internal fertilization

dioecious,

Mollusca 50,000 all habitats organ system bilateral tube within tube coelom protostome panmixia,

internal fertilization

marine & monecious or dioecious,

Annelida 15,000 terrestrial, organ system bilateral tube within tube coelom protostome panmixia or pseudocop.,

exoparasitic int. or ext. fertilization

dioecious,

Arthropoda 1,000,000 all habitats organ system bilateral tube within tube coelom protostome packet or copulation,

internal fertilization

dioecious,

Echinodermata 6,000 marine organ system radial tube within tube coelom deuterostome panmixia,

external fertilization

monecious or dioecious,

Chordata 50,000 all habitats organ system bilateral tube within tube coelom deuterostome panmixia or copulation,

ext. or int. fertilization