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life Science Terms
Life Science terms
35
Science
7th Grade
10/27/2009

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Term
heterotrophs
Definition
organisms that cannot make their own food ex: frog
Term
multicellular
Definition
organisms that are composed of many cells that are specialized to do tasks ex: human
Term
autotrophs
Definition
organisms that make their own food ex: plant
Term
VERTEBRATES
Definition
animals with backbones ex: rat
Term
INVERTEBRATES
Definition
animals without backbones ex: octopus
Term
LEARNED BEHAVIOR
Definition
behavior that has been developed from experience
Term
HIBERNATION
Definition
a period of inactivity and decreased body temperature that some animals experience in the winter ex: grizzly bear
Term
ESTIVATION
Definition
period of reduced activity in the summer ex: frogs and toads
Term
BIOLOGICAL CLOCK
Definition
an internal control of an animal's natural cycles
Term
PHEROMONES
Definition
chemicals animals use for communication
Term
INNATE BEHAVIOR
Definition
behavior that does not depend on learning or experience, inherited through genes ex:
Term
unicellular
Definition
an orgNISM COMPOSED OF ONLY ONE CELL ex: amoeba
Term
sessile
Definition
an organism that can't move because it is attached to something ex: barnecles
Term
motile
Definition
an organism that can move they are not attached to something ex: cat
Term
endothermic
Definition
an animal whose body controls and regulates tempature ex: human
Term
ectothermic
Definition
an animal who dose not produce body heat thier temature changes with the enviorment ex: worm
Term
advantages to being endothermic
Definition
that you don't have to live in a warm climate to survive
Term
disadvantages to being endothermic
Definition
is that it takes a lot of energy and you have to eat alot because of that
Term
advantages of being ectothermic
Definition
can warm and cool body using the enviorment and dose not have to eat as much
Term
disadvantages to being ectothermic
Definition
you can only live in a warm climate also have to hibernate
Term
herbivore
Definition
animal that only eats plants ex: catapiler
Term
carnivore
Definition
animal that only eats meat Ex: dog
Term
omnivore
Definition
animal that eats both plants and meat ex: human
Term
decomposer
Definition
an animal that breaks down dead organisms ex: fungus
Term
filter feeder
Definition
an organim that filters plankton out of the water ex: coral
Term
hydroskeleton
Definition
Term
exoskeleton
Definition
a waxy waterproof outer shell or outer skeleton that protects the animal ex: roach, crab, lobster
Term
Nonsegmented
Definition
An organism that does not have a body divided into sections. Ex Humans, dogs, rats, horses, snails, slugs, snakes
Term
Marking their territory with pheromones
Definition
smells.Ex.urine, feces, musk, antler marks, claw marks.
Term
Advantages of living in a group
Definition
Safer,numbers protect each other,can warn group of predators,hunt together,find mates easy,protectyoung.
Term
Migration
Definition
When animals travel long distances to find food, find a mate, or to have a offspring. Ex. Ducks, geese, whales, salmon, hummingbirds
Term
Dorsal
Definition
Vertebrates- Side with backbone. Invertebrates- Top side or side opposite of mouth(aboral).
Term
Mimicry
Definition
When an non dangerous animal copies the coloration of an dangerous animal or when an animal tries to fool predators with optional illusions. Ex. Eye Spots on moth's wings, penguin, king snake, painted lady butterfly.
Term
Making noises
Definition
Barking, growling, howling, purring, grunting
Term
Internal Fertilization
Definition
When the egg is fertilized inside the females body. Ex. Humans, Lions, snakes, chickens.
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