28 terms

Unit 6 - Biology

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organism
a living thing

5 characteristics:
• Made of cells
• Organic molecules
• Use energy
• Respond to environment
• Have a life cycle
development
when an organism changes and becomes more complicated
reproduction
when organisms make offspring (children) that are similar to the parents
metamorphosis
when an animal's body changes dramatically from one form to another form
inherited trait
a physical characteristic passed down from parents to children
adaptation
a trait or behavior that helps an organism to survive in its environment or to reproduce
instinctive behavior
an inherited behavior that the organism performs correctly the first time
learned behavior
a non-inherited behavior that requires practice and experience
hibernation
a seasonal behavior when all of an animal's body processes slow down for the winter

(The body uses up stored fat instead of having to eat.)
plant dormancy
a seasonal behavior when plants slow their activity in response to cold weather

Ex. Some trees lose their leaves in the fall
migration
the seasonal journey of an animal from one place to another and back

(During cold seasons, animals move to a warmer climate to find food and warmth.)
roots (structure)
Their function is to take in water and nutrients from the soil, and to hold the plant in place.
stem (structure)
Its function is to transport water and nutrients up and down through the plant, and to support the plant.
leaves (structure)
Their function is to produce food for the plant through photosynthesis.
flower, fruit, and seeds (structures)
Their function is to help the plant reproduce.
producer
an organism that turns the sun's energy into food
consumer
an organism that gets energy from eating other organisms
ominvore
eats both meat and vegetables
carnivore
eats only meat
herbivore
eats only plants
predator
an organism that kills and eats another for food
prey
an organism that is killed and eaten by another for food
scavenger
a carnivore that eats the bodies of dead organisms (does not kill them itself)
decomposer
an organism that breaks down the dead bodies of organisms and returns their nutrients to the soil
Photosynthesis
The process in which plants make food for themselves. They use energy from the sun, carbon dioxide, and water to make sugar (glucose) and oxygen.
habitat
the place where an organism lives and all the resources the organism depends on
ecosystem
all the organisms in an area, plus the non-living parts of their environment (air, water, etc.)
population
a group of organisms belonging to the same species and living in the same area
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