 The
amount of time a female is
pregnant (the time between
fertilization and birth)

The large muscle that allows
mammals to breathe
 Monotremes
Duck billed platypus
 Echidna

 gills
 Lungs
and skin
 Lizards
have legs
 Chordata

A warm blooded vertebrate; their
body temperature does not change
much, even when the temperature
of the environment changes
A
jawless fish
 The
larvae of a frog or toad
 An
exoskeleton
Two legs per body segment
 Herbivores

Two body segments
 Eight legs
 No antennae or wings

Six legs
 Three body segments
 Can have wings


Helps them hide to avoid predators
 Helps
a gastropod scrape food
from a surface
 gastropods
 water
 An
organism that eats waste and
dead organisms





Multicellular
Heterotrophic (have to find food)
Almost all reproduce sexually
Move at some point in their life
Have specialized cells

A vertebrate

When one line can be drawn to
divide an animal into halves that are
mirror images
Roundworms (Phylum Nematoda)
 Flatworms (Phylum
Platyhelminthes)
 Segmented worms (Phylum
Annelida)


An organism that grows on or in
another organism
 Radial
symmetry
A
balanced arrangement of parts
 The
cell
joining of sperm and egg
 Mammals
and birds
 One
or none

Radial symmetry
 Invertebrates
 Humans
 Monkeys
 apes
 cartilage
 Swim
bladder
 salamander
 Spiders
 Mites
 ticks
 omnivore
 An
animal without a backbone
 radial