Term
| characteristics of animals |
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Definition
| heterotrophic, multi-cellular, most can move, more complex, no cell walls |
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Term
| what are the three types of symmetry? |
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Definition
| bilateral symmetry, radial symmetry, and asymmetry |
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Term
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Definition
| cut them and they are mirror images |
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Term
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Definition
| things you can split any direction |
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Definition
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Term
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Definition
no backbones.
exoskeletons |
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Term
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Definition
have backbones
endoskeletons |
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Term
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Definition
very simple
asymmetry
adults don't move
suck in water through pores; filter feed |
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Term
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Definition
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Term
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Definition
| radial symmetry; stinging cells to capture or paralyze prey; polyp and medusa body forms |
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Term
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Definition
| jellyfish, corals, sea anemones |
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Term
| platyhelminthes are ______________ |
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Definition
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Term
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Definition
| bilateral symmetry; flattened body; have organs that can sense light, chemicals, food, movement, etc in environment |
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Term
| nematoda are ______________ |
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Definition
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Term
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Definition
| round body; have mouth and anus; bilateral symmetry |
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Term
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Definition
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Term
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Definition
bilateral symmetry; muscular foot; mantle surrounds internal organs--some secrete a shell
most have eyes, some have brains |
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Term
| three classes of mollusca |
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Definition
| class gastropod, class cephalopods, class bivalves |
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Term
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Definition
| have foot, most have a shell. includes snails, slugs, conches, abalones |
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Term
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Definition
| foot is split into tentacle with suckers and hooks. they expel water through siphon to move. beak-like jaws. includes squid and octopi |
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Term
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Definition
| foot and 2 hinged shells. includes clams, oysters, scallops |
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Term
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Definition
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Term
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Definition
| earthworms, leeches, worms |
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Term
| characteristics of annelida |
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Definition
| tiny hairs for movement; segmented--good for movement and differentiation |
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Term
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Definition
| segmented; bilateral symmetry; exoskeleton for protection and support; jointed structures--appendages |
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Term
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Definition
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Term
| echinodermata characteristics |
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Definition
radial symmetry; move with suction cup-tipped appendages
skin covered in pincer/spines/plates
endoskeleton |
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Term
| what do all chordates have at some point in their life? |
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Definition
| a notochord, dorsal hollow nerve chord, post-anal tail, and pharyngeal gill slits |
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Term
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Definition
| rod-like structure located btwn the digestive system and the nerve cord. may become a backbone in some |
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Term
| dorsal hollow nerve chord |
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Definition
| in many develops into the spinal chord |
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Term
| description of vertebrates |
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Definition
| bilateral symmetry, endoskeletons, three body layers, closed circulatory system, complex nervous system, efficient respiratory system |
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Term
| classes of phylum cordata |
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Definition
| agnatha, chondrichthyes, osteichthyes, amphibians, reptilia, aves, mammalia |
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Term
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Definition
aquatic; reproduce sexually; 2 chambered hearts; gills; ectotherms
divisions are agnatha, chondrichthyes, and osteichthyes |
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Term
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Definition
| no scales or jaws; skeleton of cartilage |
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Term
examples of agnatha
examples of osteichthyes
examples of chondrichthyes |
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Definition
lampreys and hagfish
majority of fish
sharks, skates, rays |
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Term
| description of chondrichthyes |
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Definition
| cartilaginous fish (cartilage skeleton); have jaws, paired fins, well-developed senses; scales; lateral line system. most do external fertilization |
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Term
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Definition
| bony skeleton, vertebrate for flexiblity. paired fins, swim bladder for buoyancy. external fertilization (spawning) |
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Term
| ectotherms vs endotherms? |
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Definition
| ecto rely on heat from the outside environment (cold blooded). very efficient. endo rely on heat from withing through metabolic processes. they maintain a constant internal temp and take more energy (food) |
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Term
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Definition
| aquatic larva metamorphasize into air-breathing, semi-terrestrial adults |
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Term
| characteristics of amphibians |
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Definition
| thin, moist skin (breathe through skin); gills for water and lungs for air; usually 4 legs; external fertilizaion (which needs water); eggs without shell (must be moist); ectotherms |
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Term
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Definition
-newts and salamanders
-look like lizards, but have smooth, moist skin and no claws |
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Term
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Definition
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Definition
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Term
| Characteristics of class reptilia |
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Definition
| live entirely on land; dry, scaly skin; claws; usually have four legs; internal fertilizaion; amniotic eggs |
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Term
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Definition
| shell is leathery. fluid and yolk are enclosed in a membrane. embryo has its own "pond" with food inside shell. |
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Term
| Class aves characteristics |
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Definition
| all birds have feathers, wings, internal fertilization, shelled amniotic egg (must incubate), endothermic, related to dinosaurs |
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Term
| what makes class Aves unique? |
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Definition
| all birds have the unique feature of feathers! |
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Term
| Characteristics of mammals |
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Definition
| hair; mammary glands; endothermic; large, complex brains & highly developed nervous systems |
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Term
| heat conserving and cooling mechanisms in mammals |
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Definition
conserving: hair for insulation and waterproofing; blubber
cooling: panting, sweating, shedding |
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Term
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Definition
Energy: 4 chambered hearts, diaphragm muscle which increases oxygen intake
Adaptations for food/survival: modified limbs, modified teeth |
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Term
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Definition
| mammary glands secrete milk for young; mammals protect their young, some stay with mothers for years |
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Term
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Definition
-egg laying mammals
-only 3 species exist today (duckbilled platypus and spiny anteaters) |
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Term
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Definition
| mammals with a pouch; short period of development in mother's body followed by development in a pouch outside of mother's body. most in Australia |
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Term
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Definition
| carry young in uterus until development is almost complete; nourishment through the placenta; 95% of all mammals |
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