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53 Cards in this Set
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ingest their food; development may include a blastula, gastrula and larval stage
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Animals
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Animals evolved from
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colonial protist
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ingest their food; development may include a blastula, gastrula and larval stage
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Animals
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animal diveristy exploded during
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Cambrian period
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Animals evolved from
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colonial protist
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simplest animals and have no ture tissues. (1/9)
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Porifera
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animal diveristy exploded during
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Cambrian period
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their flagellated choanocytes filter food from water passing through the porous body
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Porifera
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simplest animals and have no ture tissues. (1/9)
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Porifera
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have true tissues and radial symmetry, cnidoycytes, gastrovascular cavity (2/9)
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Cnidarians
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their flagellated choanocytes filter food from water passing through the porous body
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Porifera
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two body body forms:
Polyps Medusae |
Cnidarians
"cup up" "cup down" |
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have true tissues and radial symmetry, cnidoycytes, gastrovascular cavity (2/9)
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Cnidarians
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tentacles that sting prey__
part of what phylum? |
cnidocytes
Cnidarians |
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two body body forms:
Polyps Medusae |
Cnidarians
"cup up" "cup down" |
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bilateral animals with no body cavity, gastrovascular cavity and nerve net (3/9)
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Platyhelminthes
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have a pseudocoelom and a complete digestive tract and ared covered by a protective cuticle (4/9)
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Nematodes
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tentacles that sting prey__
part of what phylum? |
cnidocytes
Cnidarians |
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bilateral animals with no body cavity, gastrovascular cavity and nerve net (3/9)
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Platyhelminthes
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have a pseudocoelom and a complete digestive tract and ared covered by a protective cuticle (4/9)
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Nematodes
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includes: Gastropods, bivalves and cephalopods. Muscular foot and a mantle
many feed with a rasping radula (5/9) |
Mollusca
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segmented worms (6/9)
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Annelids
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segmented animals with exoskeletons and jointed appendages. (7/9)
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Arthropods
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spiny skins, an endoskeleton and water vascular system with tube feet that aids in respiration and locomotion(8/9)
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Echinoderms
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dorsal, hollow nerve cord, stiff notochord, pharyngeal slits and a muscular postanal tail. (9/9)
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Chordates
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4 Characteristics of Chordates :
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1. hollow nerve cord, dorsal
2. notochord 3. pharyngeal slits 4. postanal tail |
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embryonic stage; hollow ball
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blastula
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one side of the blastula folds inward
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gastrula
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inner sac that turns into digestive tract
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endoderm
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outer cell layer that will become animals outer covering
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ectoderm
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third embryonic layer forming muscles and most internal organs
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Mesoderm
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immature individual that looks different from the adult animal
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Larva
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major change of body form
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metamorphosis
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Scientific directions:
head end tail end back front |
anterior
posterior dorsal ventral |
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symmetry:
Starfish human |
radial
bilateral |
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provides a rigid structure against which muscles contract moving the animal (water balloon)
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hydrostatic skeleton
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animals that collect food particles from water passed through some type of food-trapping equipment
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Suspension Feeders
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anchored in place
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sessile
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larva to adult after many molts and pupa stage
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complete metaporphosis
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larva to adult after many molts no pupa stage
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incomplete metaporphosis
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network of water-filled canals that branch into extensions called tube feet
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water vascular system
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all chrodates with a head
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craniates
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1st vertebrates on land; jawed vertebrates with two pairs of limbs
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Tetrapods
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tetrapods with a terrestrially adapted egg
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Amniotes
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have flexible skeleton made of cartilage
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Chondrichthyans
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a row of sensory organs running along each side that are sensitive to changes in water pressure and can detect vibrations
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Lateral Line System
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protective flap that covers a chamber housing the gills
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operculum
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lung derivative that helps keep them buoyant
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swim bladder
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absorb the external heat rather than generateing much of their own
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ectothermic
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using heat generated by metabolism to maintain a warm, body temp
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endothermic
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egg-laying mammals
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monotremes
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mammals that bear fully developed live young
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Eutherians
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flexible, supportive, longitudinal rod located between the digestive tract and nerve cord
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notochord
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