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life science terms
terms
34
Science
7th Grade
10/29/2009

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Term
Sessil
Definition
Organisms that cant move Example:coral,sponges ,and sea anenomes
Term
Motil
Definition
Organisms that can move Example: birds,fish,and humans
Term
Multicellular
Definition
Organisms that have more than one cell Organisms with more than one cell in their body Example:Humans,slugs,and mice
Term
unicelluar
Definition
Organisms with one cell in their body Example:bacteria,yeast,and viruses
Term
endthermic
Definition
Organisms that produce their own body heat Example: birds and mammals
Term
Ectothermic
Definition
an organism that does not produce much organisms that dont produce much internal heat Example:snakes,slugs,and amphibians
Term
advantages to being Endothermic
Definition
You keep the same body temperture,Can move Quickly
Term
disadvantages to being Ectothermic
Definition
it takes up alot of energy so you must constantly eat
Term
Advantages to being ectothermic
Definition
it doesn't take much heat to warm and heat so you don't always have to eat
Term
disadvantages to being ectothermic
Definition
warmth depends on the weatherm,usualy hibernate,can't move until warm
Term
vertabrates
Definition
organisms that have a back bone:birds,fish,reptiles,mammals
Term
invertabrates
Definition
organisms with no back bone:crustations,worms,insects,spiders,protozoens
Term
autopods
Definition
organisms that mack their own food:corn,flowers,squash
Term
heterotroph
Definition
organisms that can't make their own food:humans,mammals,reptiles
Term
herbivor
Definition
animals that eat only plants:cow,sheep,horse
Term
carnivore
Definition
animals that eat only meat:cats,dogs,fox,wolf,lion
Term
Omnivore
Definition
animals that eat plants and meats:humans,bears,chimps,racoons
Term
decomposer
Definition
organisms that break down large chemicals in dead organisms into small chemicals:mold,mushrooms,mildew
Term
filter feeder
Definition
organisms that filter planktn out of water:coral,sponges,oysters,marin worms
Term
scavenger
Definition
animals that eat anything dead or alive:fox,racoons,buzzards
Term
endoskeleton
Definition
an internal skeleton:cow,dog,cat
Term
Exoskeleton
Definition
an external skeleton:shrimp,spider, roach
Term
hydroskeleton
Definition
organisms that have a fluid filledbody.their "skeleton" is made of water:slugs,jellyfish,tape worm
Term
bilateral symetry
Definition
an organism that has an equal left and right side:humans,rats,and fish
Term
radial symetry
Definition
an organism with a center of its body that has body parts coming out of the center:starfish,jellyfish,some sponges
Term
sperical symetry
Definition
organisms with a sperical shape
Term
asymetrical symetry
Definition
an organism without any symetry :fideler crab,some sponges,some corals
Term
segmented body
Definition
an organism whos body is divided into divisions:shrimp,leeches,tape worms,centipedes,milipedes
Term
non segmented body
Definition
organisms whos bodys are not divided into divisions
Term
dorsal side
Definition
vertabrate-the side with the backbone
inverabrate-the top side or side opposit of the mouth
Term
vental side
Definition
vertabrate-side with abdomen
invertabrate-side with the mouth
Term
anterior
Definition
tha side of the body with the head and/or sensory organs
Term
posterior side
Definition
the side with the anus
Term
caudal body
Definition
(only refers to aquatic animals with tails)tail is the caudal end
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