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36 Cards in this Set
- Front
- Back
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What separates animals from other organisms
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collagen, nervous and muscle tissue and no cell wall
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gastrulation
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during blastula stage the embryo folds in forming a blastopore
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name the tissue layers
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endoderm, ectoderm, mesoderm
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Radiata are triploblastic or diploblastic
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diploblastic
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A butterfly is an example of direct development or indirect development
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indirect development
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a life-cylce stage that is sexually immature and morphologically different from an adult
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larva
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Metamorphosis
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developmental transformation that turns a larva into a juvenile to become an adult
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the gene that controls the expression of genes that influence morphology
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Hox gene
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Animals evolved from
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protists
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closest living relative to animals
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choanoflagellates
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most primitive animal
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parazoa
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animals that have true tissues
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eumetazoans
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cephalization
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anatomical concentration of sensroy receptors near the mouth
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animals with three germ layers are
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triploblastic
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coelomates
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have a true body cavity
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acoelomates
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lack a body cavity
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examples of protostomes
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mollusca, annelids, cnidaria
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the fate of the blastopore is protostomes
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mouth
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Cambrian Explosion
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explosion of animals
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most abundant animals
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invertebrates
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porifera or sponges have what type of body symmetry
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none!
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Sponges unique water system is powered by
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choanocytes
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sharp spicules are found in what layer of the sponge
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mesohyl
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animals that function as a male and female during sexual reproduction
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hermaphrodite
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name animals that can regenerate
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sponges (porifera) and asteroidae (sea stars)
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Cnidaria have two types of body plans, name them
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meduse and polyp
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which body plan is sessile
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polyp
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function of tentacles
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defense, capture and kill prey, and push food to gastrovascular opening
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name the three classes of cnidaria
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hydrazoa, scyphozoa and anthozoa
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ecological signifigance of anthozoas
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coral reefs
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what characteristic is unique about hydrozoas
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they alternate between medusa and polyp
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what does the phylum ctenophora mean
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comb-bearers, crown of cilia
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planarians reproduce through sexual or asexual reproduction
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both! they use regeneration and hermaphrotite
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flukes are tremetodes that cause sicknesses such as
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schistosoma
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tapeworms and flukes are an example of what type of parasite
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endoparasite
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psuedocoelom
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tube within a tube
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