Chapter 23 part 3
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Chapter 23 part 3
3 classes of Annelids?
: live in ocean with featherly gills
: freshwater, moist enviroments
Annelids are B or R
3 Classes of Molluska?
: Scallops, oysters, mussels, Clams..
: Octopuses, Squids, cuttlefish,
Molluska B or R
4 groups of Arthropods?
Butterflys and Moths
Bees and wasps
Arthropods B or R
cannot expand so must shed or molted
: egg-nymph-adult (grasshoppers and Crickets)
Yes have organs
Porifera: B or R
Proifera: Cell Types of a sponge
Because no real organs or tissues individual cells:
: cover outter body
: surround pores, regulating water
: food is passed through cells
: Maintatin water flow throught sponge by beating flagella that extend into the inner cavity
Proifera: Types of Sponges
Cnidarians: 3 Types
: jelly fish
: sea anemones, corals
Cnidarians: Nerve Nets?
some have nerve nets: branches through the body and controls the contractile tisse to bring about movement and feeding behavior
Cnidrains: Tissues or organs? B or R
No organs,and are Radial
Cnidaridans: Body Types
: Tubular, attached to rocks, tenticals upward
: floats in water, carried by currents, tenticals downward
tenticals armed with cnidocytes
Cnidarians: Germ layer
two germ layers, between them are jelly like substance
Platyhelminthes: B or R, Reproductions?
Bilateral, hermaphroditic so can reproduce asexually and sexually
Nematoda: B or R; Body; Organs or Tissues?
Bilateral, Organ systems, Tubular gut, fluid filled pseudocoelm surrounding organs
Sand Dollars, Sea orchins, Starfish
Echinodermata: B or R
Bilateral as larve and Radial as adults have endoskeleton (internal skeleton)
Platyhelminthes: 3 classes
nerve cells with nerve cords to ganglia signals body, lacks respritory and circulatory systems
Platyhelminthes: Tapeworms: Scolex
Hook like thing that attaches to the intestense of the animal or person
Segment of tapeworm containing male and female reproductive organisms.. come out of human stool