Phylums of Animalia Flashcards
two basic body forms, medusa and polyp, jellyfish
Cnidaria
Lack nervous system, reproduce asexually, sponges
Porifera
mostly fresh water, reproduce via cyclic parthenogenesis
Rotifera
flattened unsegmented bodies, mouth but no anus
Platyhelminthes
unsegmented round worms, mouth and an anus
Nematodes
cylindrical, segmented bodies with bristles, leeches
Annelids
Soft bodied and unsegmented, muscular foot, visceral mass and head
Mollusca
two shells hinged together, scallop
Bivalvia (Mollusca)
Shell, head and tentacles with eyes, snail
Gastropoda
Mollusca class: eyes and tentacles, squid
Cephalopoda (Mollusca)
exoskeleton made of chitin, jointed appendages, segmented bodies, grow in stages after moulting, open circulation system
Athropods
Arthropoda Class: mainly marine, gills, two pairs of antennae, three pairs of mouthparts, lobster
Crustacea (anthropods)
terrestrial, two body parts, four pairs of legs, two feeding appendages, no antennae
Arachnida
mostly terrestrial, most can fly, three body parts (head thorax abdomen) one pair of antannae, three pairs of legs
Insecta
clearly defined head, round body with many segments, each with two pairs of legs, one set of antennae and one pair of mouthparts, millipede
Diplopoda
clearly defined head, flat body with many segments, each with one pair of legs, one set of antennae and one pair of mouthparts, centipede
Chilopoda
rigid body walls, internal skeleton, many posses spines, ventral mouth, dorsal anus, external fertilisation, tube feet, water vascular system, sea star
Echinodermata
Dorsal notochord and post anal tail both present at some stage in development, dorsal, tubular nerve cord, pharyngeal slits present, circulation system closed in most, heart positioned on ventral side
Chordata
internal skeleton of cartilage, no swim bladder, all aquatic, sharks
Chondrichthyes (Chordata)
bony fish, swim bladder present, all aquatic, eel
Osteichthyes
lungs in adult, girls may be present in juveniles, has exchange through skin, aquatic and terrestrial (damp environments)
Amphibia
ectothermic with no larval stage, teeth are the same type, eggs with soft leathery shells, mostly terrestrial, snakes
Reptilia (Chordata)
terrestrial endotherms, eggs with hard callerous shells, strong light skeleton, high metabolic rate, gas exchange by air sacks, penguin
Aves
endotherms with hair or fur, mammary glands produce milk, glandular skin, external ears, teeth are different types, diaphragm between ons omen and thorax, three sub classes: monotremes, marsupials and placentals
Mammilia
