maintaining a stable internal environment
homeostasis
arthropods with 8 legs and no antennae
arachnids
these invertebrates have radial symmetry, spiny skin and a water vascular system
echinoderms
allows a fish to adjust its buoyancy
swim bladder
these amphibians don't have tails (fancy term for frogs and toads)
anurans
process where embryonic cells become specialized
differentiation
external skeleton
exoskeleton
this group of invertebrates includes jellyfish, corals and hydras
coelenterates
two main groups of fish are bony fish and
cartilaginous fish
reptiles with no legs, scales and nictitating membranes
snakes
sequences of non-coding DNA
introns
type of metamorphosis that begins with a worm-like larva
complete metamorphosis
group includes earthworms and leeches
segmented worms
term for when fish lay eggs
spawn
reptile with a third eye
tuatara
cells with half the usual chromosome number
haploid
three regions of an insect
head, thorax, abdomen
protozoa that uses pseudopods
amoeba
large flat gill covers
opercula
the largest order of reptiles
lizards
process where living cells produce energy without using oxygen
fermentation
insect Order that includes butterflies and moths
Lepidoptera
these are characterized by a muscular foot, visceral hump and a mantle
mollusks
world's largest fish
whale shark
another term for cold blooded animals
poikilotherms