what phylum are clams in
mollusca
what are the three major classes of the phylum mollusca
bivalve, gastropod, and cephalapod.
what is unique about bivalve
They are two shelled
what is unique about gastropod
their feet and mouth are at the same place
what is unique about cephalopods
They have no neck, legs are attached to head
what is the radula
a tongue with teeth that snails help to eat algae
why are echinoderms called what they are
because of their spiny skin
what are some examples of echinoderms
starfish, and urchins etc.
what are some unique features of echinoderms
good regeneration, and their water vascular system
what is the water vascular system
It’s a network of fluid-filled canals that functions in locomotion, feeding, and respiration in echinoderms.
what are the names of each of the arms on starfish
rays
what are the bumps of starfish called
spine
is the spine protrutions of endo or exosceleton
endoskeleton
memorize water vascular system of starfish
madreporite, stone canal, ring canal, radial canal, tube feet, digestive gland, gonads, stomach
why do starfish win the battle with crayfish that try to keep their shell closed
thanks to hydraulic system the crayfish gets tired and they sneek their stomach inside and eat the crayfish.
whats the name of the stuff on the upper portion of the ray
digestive gland
why do starfish have so many digestive glands on rays
because the stomach comes out and they want to digest food quickly
whats the stuff on the lower part of the rays called
gonads
what do gonads do for starfish
they produce sperm and egg
explain how starfish fertilize
when male release sperm in water female detect that and release eggs too. external
what type of animal are starfish that are on the sea floor. (that arent attached)
benthos
do butterflys have complete or incomplete metamorphisis
complete
name incomplete metamorphiisis
egg-nymph-adult
name complete metamorphisis
egg-larva-pupa,adult
