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53 Cards in this Set
- Front
- Back
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Deuterostome development
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cleavage is:
indeterminate radial blastospore becomes anus |
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Protostome
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cleavage is:
determinate spiral blastospore becomes mouth |
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blastospore
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forms during gastrulation
connects the archenteron to the exterior of the gastrula |
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animal agreement points
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-share common ancestor
-sponges are basal -Eumetazoa- true tissues -clade Bilateria |
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animal tissue
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develop from embryonic layers
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animal cell structure
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-multicellular eukaryotes
-lack cell walls -structural proteins like collagen -nervous tissue and muscle tissue |
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animal reproduction
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zygote to sperm
cleavage blastula gastrulation |
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animal development
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Hox genes
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Hox genes
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cell division and differentiation
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1 bil-524 mya
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Neoproterozoic
-Edicaran bioata |
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542-251 mya
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-Paleozoic
-predator/prey -Hox genes -atmospheric o2 mass extinctions |
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251-65.5 mya
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Mesozoic
-dinos -coral reef -flight -nocturnal insectivores |
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65.5-today
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Cenzoic
-extinction of dinos -open of ecological niches |
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Invertebrates
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95% of animals
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Sponges
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Phyla Calcarea
Phyla Silicea -sessile -fresh and marine water -lack true tissues and organs -suspension feeders |
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Sponges
-Phyla? |
Calcarea
and Silicea |
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Sponges
-Habitat? |
-fresh and marine waters
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Songes
-lack |
true tissues and organs
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Sponges
-feed how? |
suspension feeders
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Sponges
-food process |
Choanocytes (flagellated collar cells) generate water current and ingest food
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Sponges
-water drawn in through |
-spongocoel
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sponges
-water taken out through |
-osculum
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sponges consist of a _____ layer
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-mesophyll
in between 2 cell layers -non cellular -ameobocytes are found here and play role in digestion and structure |
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sponges sex
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hermaphrodite
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spongocoel
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water is taken in through this in sponges
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osculum
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water is taken out through this in sponges
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spongocoel
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water is taken in through this in sponges
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osculum
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water is taken out through this in sponges
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mesophyl
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noncellular layer in between 2 sponge cell layers
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parthenogenesis
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females produce offspring from unfertilized eggs
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amoebocytes
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found in mesophyl, play key part in digestion and structure
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ammonites
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shelled cephalopods
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nematocysts
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specialized organelles within cnidocytes that eject stinging thread
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cuticle
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tough coat covering ecdysozoan
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protonephridia
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regulate osmotic balance in flatworms
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molted
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shed
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parthenogenesis
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females produce offspring from unfertilized eggs
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ammonites
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shelled cephalopods
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cuticle
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tough coat covering ecdysozoan
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arthropod
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segmented body
hard exoskeleton jointed appendages |
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eurypterids
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water scorpions
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book lungs
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respiratory organs in spiders
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mandibles
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jaw-like in myriapoda
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Cnidarian body plan
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sac w/ central digestive compartment
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All animals except ___ belong to Eumetazoa
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Sponges b/c they don't have true tissues
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Fossil jellyfish prove jellyfish evolved
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quickly or are older than thought
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Cnidarian body plan 2
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diploblastic, radial
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Cnidarian single opening functions as
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mouth and anus
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Cnidarians- carnivore, herbivore, omnivore?
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carnivore
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cnidarians capture prey how?
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tentacles w/ nematocysts
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Nerve net
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weblike system of neurons
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cnidarians- nervous system?
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no central nervous system
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Cnidarian classes
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1. Hydrozoa
2. Scyphozoa 3. Cubozoa 4. Anthozoa |
