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Animal Diversity Exam #2
Animal Classification & Phylogeny
52
Biology
Undergraduate 1
10/10/2010

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Term
TAXONOMY
Definition
The branch of Biology concerned with identifying, naming & classifying organisms.
Term
Carolus Linnaeus
Definition
Developed a system of classification based on structural similarities and differences
Term
GENUS & SPECIES
Definition
The first name is the Genus name (General Name), the second name is the Species name (Specific Name)
Term
BINOMAL NAME
Definition
The Genus and species name together
Term
TAXONOMICAL HIERARCHY
Definition
Listed from top to bottom:
Kingdom, Phylum, Class, Order, Family, Genus, Species.
Term
KEEP POTS CLEAN OR FAMILY GETS SICK
Definition
kingdom, phylum, class, order, family, genus, species
Term
KINGDOM ANIMALIA INCLUDES:
Definition
The Invertebrates and Vertebrates. (backbone & no backbone)
Term
9 GROUPS OF ANIMALS
Definition
Bottom to top:
Sponges, Cnidarians, Flatworms, Mollusks, Echinoderms, Chordates
Term
CHARACTERISTICS OF ALL ANIMALS
Definition
Cannot make their own food, either sessile or motile, digestive cavity inside the body, can perform rapid complex movements, multicellular
Term
TYPES OF SYMMETRY
Definition
Asymmetry, Bilateral, Radial
Term
SEGMENTED
Definition
A series of repeating singular units, called segments. Generally worms.
Term
CEPHALIZATION
Definition
a developed brain (anterior sensory and nerve structure)
Term
DIPLOBLASTIC
Definition
2 tissue layers (ectoderm and endoderm)
Term
TRIPLOBLASTIC
Definition
animal that has all 3 layers (ectoderm, mesoderm, endoderm)
Term
ACOELOMATE
Definition
NO internal cavity
Term
PSEUDOCOELOMATE
Definition
FALSE internal cavity
Term
COELOMATE
Definition
True internal cavity (has one)
Term
PROTOSOMES
Definition
Sac like gut
Term
DEUTEROSOMES
Definition
Complete gut (mouth and anus)
Term
PSEUDODERM
Definition
opening between the mesoderm and endoderm of PSEUDOCOELOMATES
Term
COELOM
Definition
Cavity located within the mesoderm.
Term
PROTOSTOME CLEAVAGE
Definition
cleavage is spiral & determinante
Term
DEUTEROSTOME CLEAVAGE
Definition
Radial & Indeterminate
Term
COELOM FORMATION IN PRO & DEUT
Definition
PROTOSTOMES: the splitting of solid masses of mesoderm forms the coelom
DEUTEROSTOME: the mesoderm buds from the wall of the archenteron to form the coelom
Term
PHYLUM PORIFERA
Definition
sponges
Term
PHYLUM CNIDARIA
Definition
JELLYFISH, HYDRA, CORAL
Term
PHYLUM PLATYHELMINTHES
Definition
FLATWORMS
Term
PHYLUM NEMATODA
Definition
ROUNDWORMS
Term
DICHOTOMOUS KEY
Definition
key to find the principal phyla of an animal
Term
5 MAIN CHARACTERISTICS OF SPONGES
Definition
The feed by filtration, they have collar cells, tissues are loosely organized with no internal organs, internal meshwork made of microscopic crystals or fiber, they are sessile.
Term
OSTIA
Definition
pores of the sponge
Term
SPONGOCOEL
Definition
cavity in which water is filtered
Term
OSCULUM
Definition
top opening that water is pushed out of
Term
CHOANOCYTES
Definition
COLLAR CELLS
Term
SPICULES
Definition
skeleton of the sponge
Term
CLASS CALCEREA
Definition
sponges that are small, dull in color, and entirely marine
Term
CLASS HEXACTINELLIDA
Definition
deep water sponges, have 6 pointed glass spicules.
Term
CLASS DEMOSPONGIA
Definition
most diverse class of sponges, have a skeleton make of spongin fibers of collagen.
Term
POLYP
Definition
sessile, mouth on top (eg. hydra)
Term
MEDUSA
Definition
mouth on bottom, motile. (eg. jellyfish)
Term
CNIDOCYTES
Definition
CELLS ON TENTACLES USED TO KILL AND CAPTURE PREY
Term
HYDRA
Definition
Sessile, Both Asexual & Sexually reproductive, incomplete digestive cavity
Term
CLASS HYDROZOANS
Definition
alternate between polyp and medusa, colonial
Term
CLASS SCYPHOZA
Definition
(most jellys) Free-swimming, thick jelly layer, four compartment digestive system, medusa, incomplete gut
Term
CLASS CUBOZOA
Definition
(box jellies and sea wasps) highly toxic Cnidocytes
Term
CLASS ANTHOZOA
Definition
(corals and sea anemones), only polyps, need clear water to survive (sunlight).
Term
3 CLASSES OF FLATWORMS
Definition
TURBELLARIA: mostly free living
TREMATODA: trematodes or flukes
CESTODA: tapeworms
Term
CLASS TURBELLARIA CHARACTERISTICS
Definition
free-living (non parasitic), mostly marine, the "eyes" are light receptors that help them avoid bright light, have auricles.
Term
CLASS TREMATODA CHARACTERISTICS
Definition
Parasitic worms called flukes, poorly developed digestive system, thick protective covering of cells called tegument, one or more suckers, generally have more than one host
Term
CLASS CESTODA
Definition
parasitic flatworms, lack a mouth and digestive tract, made up of proglottids, has a specialized head equiped with hooks and suckers
Term
SCOLEX
Definition
the specialized head of a tapeworm
Term
PROGLOTIDS
Definition
individual segments of the worm containing reproductive organs
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