ch 16.1 Flashcards
(25 cards)
arrangement of body parts that help support the structure and form
body plan
internal skeleton
endoskeleton
external skeleton
exoskeleton
water body
hydroskeleton
can be cut down the center and will look the same
bilateral symmetry
can be cut in half or side by side or diagnol and will look the same
radial symmetry
do not look the same on both sides
radial symmetry
animal attributes
nutrition, resperation circulation support reproduction and movement
has a backbone
vertabrate
no backbone
invertabrate
animals with a notochord, dorsal nerve cord, and pharyngeal slits at some point in their life cycle
a chordate
use body heat
endothermic
do not use body heat
ectothermic
zygote goes through division to form a ball of cells called
blastula
layer of cells that form from inward movement
germ layer
has a head
cephalization
releasing eggs into water allowing them to be fertilized
external fertilization
when to animals love each other very much
internal fertilization
species whos embryos develope outside of their mothers body
oviparous
species whos embryos develope inside their mothers body
ovovviviparous
draw nutrients from their mothers body
viviparous
the way an animals responds to their environmental factors
behavior
built in response to environment
instinct
uses fluid pressure in a cavity to maintain shape
hydrostatic skeleton
