WSU Biology 106 Exam 3 Questions With 100% Verified Answers.
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Course
WSU Biology 106
Institution
WSU Biology 106
WSU Biology 106 Exam 3 Questions With
100% Verified Answers.
Arthropods - answerPhyla with greatest amount of diversity with 85% of animal spp
700 million years ago - answerWhen the first animals originated
Porifera (sponges) - answerPhyla with no tissues, muscles, nerves, or specialized organs...
WSU Biology 106 Exam 3 Questions With
100% Verified Answers.
Arthropods - answer✔Phyla with greatest amount of diversity with 85% of animal spp
700 million years ago - answer✔When the first animals originated
Porifera (sponges) - answer✔Phyla with no tissues, muscles, nerves, or specialized organs
Choanocytes - answer✔Flow of water and food acquisition in sponges
Amoebocytes - answer✔Found in sponges, these cells are mobile and perform numerous
functions, including reproduction, transport of food particles to nonfeeding cells, and secretion of
material that forms the spicules
Spicules - answer✔Found in sponges, these consist of inorganic materials and support the animal
Cnidaria (jellyfish) - answer✔Phyla with 2 tissue layers, contractile muscle and nerve cells,
gastrovascular cavity, and radial symmetry
Metazoa - answer✔multicellular animals
Cambrian Explosion - answer✔Diversity of large animals increased dramatically around 550
million years ago
Three tissue layers - answer✔ectoderm, mesoderm, endoderm
Bilateral symmetry - answer✔Posterior/anterior
left/right senses concentrated in head and direction of movement
Coelom - answer✔Body cavity with space to put organs
Lophotrochozoa - answer✔A phyla group that has feeding and locomotory similarities
Ectoprocta - answer✔Colonial, filter feeders
All cells are identical
Cannot move
Hydrostatic skeleton - answer✔skeleton made of fluid-filled body segments that work with
muscles to allow the animal to move
Metanephridia - answer✔Tubes that process metabolic waste in annelidas
Mollusca - answer✔Visceral mass, mantle, and foot
Contain radula
Radula - answer✔An organ covered with teeth that mollusks use to scrape food into their mouths
Nudibranchs - answer✔Sea slugs
Bivalves - answer✔mollusks that have two shells held together by hinges and strong muscles
(clams)
Cephalopods - answer✔octopus, squid
Platyhelminthes - answer✔Phylum of flatworms
80% are parasitic
Ecdysozoa - answer✔Nematoda and Arthropoda
Nematodes - answer✔Roundworms
cuticle, molt, eutetly, ubiquitous, a few spp parasitic
Abundant in soil and aquatic habitats
Pinworms - answer✔Parasite of the gut
Common in young children
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