Porifera

Name means pore-bearing

Symmetry: radial

Habitat: aquatic

Significance: indicator species of pollution

Example: sponges

Cnidaria

Name means stinging cells

Symmetry: radial

Habitat: aquatic

Significance: food; painful stings; coral reefs

Example: jellyfish, hydra, coral

Platyhelminthes

Name means flat worm

Symmetry: bilateral

Habitat: terrestrial (moist environments); aquatic; fluids of host

Significance: studies in regeneration; parasites

Example: planaria, tapeworm, fluke

Nematoda

Name means round worm

Symmetry: bilateral

Habitat: terrestrial; fluids of host

Significance: recycle soil nutrients; parasites

Example: pin worms, hook worms, filarial worms, Trichina worms

Annelida

Name means little ring

Symmetry: bilateral

Habitat: terrestrial; aquatic

Significance: aerate soil

Example: earthworm

Echinodermata

Name means spiny skin

Symmetry: radial (in adults)

Habitat: marine

Significance: regeneration

Example: starfish

Mollusca

Name means soft body

Symmetry: bilateral

Habitat: mostly aquatic

Significance: second largest animal phylum

Example: includes gastropods, bivalves, and cephalopods

Gastropoda

Name means stomach foot

Symmetry: bilateral

Habitat: terrestrial and aquatic

Significance: food

Example: snails, slugs

 

Bivalvia

Name means two shells

Symmetry: bilateral

Habitat: aquatic

Significance: food

Example: clams, mussels

 

Cephalopoda

Name means head foot

Symmetry: bilateral

Habitat: marine

Significance: food; most intelligent invertebrates

Example: octopus, squid, chambered nautilus

Arthropoda

Name means jointed foot

Symmetry: bilateral

Habitat: terrestrial and aquatic

Significance: largest animal phylum; 95% of the animal world

Example: includes insects, arachnids, and crustaceans

Insecta

Name means to cut

Symmetry: bilateral

Habitat: terrestrial

Significance: pollinators; humans’ greatest competitor for food.

Example: bee, ant, butterfly

 

Arachnida

Name means spider

Symmetry: bilateral

Habitat: mostly terrestrial

Significance: venomous; transmit diseases

Example: spiders, ticks, mites, scorpions

Crustacea

Name means shell

Symmetry: bilateral

Habitat: mostly aquatic

Significance: food

Example: lobster, shrimp, crab, crayfish

Chordata

Name means cat gut

Symmetry: bilateral

Habitat: terrestrial and aquatic

Characteristics: all members contain a notochord at some point in their lives

Significance: includes vertebrates

Example: fish, frogs, snakes, birds, dogs

Agnatha

Name means jawless

Habitat: aquatic

Characteristics: tubelike bodies covered with slime; do not have paired fins or jaws; round mouth lined with teeth; cartilage skeleton; ectothermic

Example: lamprey

Chondrichthyes

Name means cartilage fish

Habitat: marine

Characteristics: cartilage skeleton; jaws; toothlike scales; paired fins; backward-slanting teeth; ectothermic

Example: sharks, skates, and rays

Osteichthyes

Name means bony fish

Habitat: aquatic

Characteristics: bony skeleton; jaws; scales; gill covers; swim bladder ectothermic

Example: salmon, trout, goldfish

 

Amphibia

Name means two lives

Habitat: land and water

Characteristics: lay eggs in water; moist skin; young have gills; adults have lungs; large hind legs; ectothermic

Example: frogs, toads, salamanders

 

Reptilia

Name means scaly

Habitat: land and water

Characteristics: dry, scaly skin; well-developed lungs; two pair of legs; amniote egg; ectothermic

Example: snakes, turtles, crocodiles

 

Aves

Name means bird

Habitat: land

Characteristics: feathers; wings; hollow bones; powerful muscles; amniote egg; beak; no teeth; endothermic

Example: eagle, hummingbird, penguin

 

Mammalia

Name means breast

Habitat: land and water

Characteristics: hair; internal development of young; feed milk to young; well-developed systems; warm-blooded

Example: dog, deer, tiger

back to notes!!!