complex animals test
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what classes are in phylum molluscs
gastropods-snails,slugs bivalves-oysters,scallops,clams,mussels cephalopods-octopus,squid,cuttlefish
what classes are in phylum echinoderms
crinozoa- sea lilies, feather stars asterozoa-sea stars,brittles stars echinozoa-urchins,sea cucumbers/biscuits and sand dollars
what classes are in phylum arthropods
arachnida-spiders,ticks,mites,horseshoe crabs crustacea-crabs,shrimp myriapoda-centipede,millipedes hexapods-butterflies,beetles
characteristics of fish
ecothermic have scales closed circulatory system wasted removed from gills/kidneys sex can change during life cycle
characteristics of amphibians
moist skin aquatic as larve,terrestrial as adults no scales or claws ectothermic closed circulatory filter feeders as larve, carnivores as adults
characteristics as reptiles
leathery/scaly skin ecthothermic double loop circulatory system live out of water amniotic eggs with shells
characteristics of birds
endothermic outer coving of feathers 2 legs with claws high metabolic rate double loop circulatory system
characteristics of mammals
mammary tissue hair follicles endothermic complex circulatory system herbivores-carnivores
3 different kinds of animals
marsupials placental oviparous
what is endothermic
warm blooded animals body temp dependent of their environment
ectothermic
cold blooded animals body temp depends on external sources
closed circulatory system
heart pumps blood through vessels
open circulatory system
blood pumps often deposits into spaces io drain back once organs have been bathed with blood
what are the two different metamorphosis
simple/gradual complex/complete
explain simple/gradual metaphorphsis
three changes egg>nymph>adult with 3-5 instars adulte and nymph eat same food
explain complex/complete metamorphosis
four changes egg>larva>pupa>adult larvae and adults eat different food
molluscs structure
muscular foot>used for locomotion mantle>thin,delicate tissue covers the body shell>made of calcium visceral>below mantle contains organs
what are snails,slugs scientific name
gastropoda
what is oysters,scallops,clams,mussels scientific name
bivalves
what is octopus,squid,cuttlefish scientific name
cephalopods
echinoderms characteristics
spiny skin have 5 part radial symmetry have tube feet water vascular system and ring canal
sea lilles and feather stars scientific name
crinozoa
sea stars ,brittle start scientific name
asterozoa
urchins,sea cucumbers/biscuits and sand dollars science name
echinozoa