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Life Science
70 Flash Card Test#1
17
Science
7th Grade
11/02/2009

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Cards

Term
Open Circulatory System
Definition
Blood is not contained in blood vessels; blood flows through body/organs freely.
Term
Closed Circulatory System
Definition
Blood is conained in blood vessels.(arteries+veins)
Term
Ectoderm
Definition
Outer most body/layer.(skin)
Term
Mesoderm
Definition
Middle body layer.(muscles/fat)
Term
Endoderm
Definition
Inner most body layer.(internal organs)
Term
Nocturnal
Definition
Organism that is active at night;sleep during the day.Ex.owls, deer, cats.
Term
Diurnal
Definition
Organism that is active during the day;sleep at night.Ex.humans,horses,dogs
Term
Territory
Definition
An area wher an organism lives , hunts, breeds, and raises their young.
Term
They will protect their territory by:
Definition
Making noises, body language, fighting, marking their territory with pheromones.
Term
Body Language
Definition
Using your body to show emotions.Ex.Showing teeth, wagging tail.
Term
Making noises
Definition
Barking, growling, howling, purring, grunting.
Term
Marking their territory with pheromones
Definition
smells.Ex.urine, feces, musk, antler marks, claw marks.
Term
Courtship Rituals
Definition
Dances, moving antenna,etc.
Term
Pheromones
Definition
Chemically produced odors(smells)that an organism can produce.
Term
Four Main Functions of Pheromones
Definition
Attract a mate-use must to attract others; Scare a predator-Use body odor to scare; Mark their territory-Urinate around territory; Signal danger-odor to relay fear/danger.
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
Disadvantages of living in a group
Definition
Have to share food,compete for mates, diseases spread,attracts predators.
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