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16 Cards in this Set
- Front
- Back
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Describe Sponges
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no true tisse, no radial-symmetry
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Describe Cnidarians
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true tissues, radial symmetric
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Describe Flatworms
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bilateral symmetric, acoelemates
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Describe flatworms in terms of cephalization
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light‐sensi(ve eyespots, flaps that detects
chemicals, 2 ganglia form simple brain, pair of nerve cords |
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Describe Molluscs
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true coelom, open circulatory system
gastropods, bivalves, cephalopod, chitons |
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Describe Annelids
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many body structures
repeated in each segments (digestive tract not segmented!), closed circulatory system |
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Describe Arthropods
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segmented animals with jointed
appendages & exoskeleton (molting), open circulatory system ‐> each segmented group specialized for different function Chi(n: thick around head, thin & flexible e.g. at joints |
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Give an example of a Arthropod
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a)Chelicerates (horseshoe crab, scropions, spiders, (cks, mites)
b)Millipeds & Centipedes c)Crustaceans d)Insects : over 70% of all animal species, have wings, short generation (mes, lots of offspring |
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Describe Echinoderms
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closest phyla to chordata,
unique water vascular system |
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Name 4 features of chordates
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Notochord,
pharyngeal slits/clefts, dorsal hollow nerve cord, post‐anal tail |
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What are tetrapods?
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vertebrates with two pairs of limbs, includes reptiles, amphibians,birds and mammals
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Describe amphibians
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reproduc(on depends on
water, gas exchange via moist skin salamanders, frogs & toads, caecilians |
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Describe reptiles
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amniotes (amniotic egg!), dry skin
lizards, snakes, turtles, crocodilians, dinosaurs, birds |
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Describe birds
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adapta(ons for flight:
reduced weight (feathers, bones, beak), acute sense (vision, brain), provide power (endothermic, double circula(on & 4‐chambered heart unidirec(onal ven(la(on of the lungs) |
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Describe the 3 types of mammals
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Monotremes, Marsupials, Eutherians
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Name the special characteristics of mammals
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Mammary glands, Hair, Endothermy, efficient
respiratory & circulatory system, differen(ated teeth, large brains, 3 middle ear bones |
