System A group of objects or phenomena that interact or work together.

SystemA group of objects or

phenomena that interact or work together.

ClassificationGrouping based upon shared

characteristics.

CellSmallest living unitthat is able to perform the basic functions of life.

TissueGroup of cellsthat work together.

Organ2 or more types of tissuethat work together to perform afunction.

PhotosynthesisThe process plants use to capture energy from sunlight and convert it to chemicalenergy.

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Cellular RespirationProcess in which cells use oxygen to release energy stored in sugars.

Stimulus

Something that produces a response

from an organism.

Behavior

An organisms action in response

to a stimulus.

AdaptationCharacteristic, behavior,

or inherited trait.Makes a species able to survive

in a particular environment.

Characteristic

Trait.

Attribute.

Distinguishing feature.

Structure

The frameworkof something;

How it is put together.

Function

The natural actionof something;How itworks.

An animal that does not have a backbone.

Invertebrate

VertebrateAnimal that has abackbone.

ExoskeletonA strong outer covering made of chitin.

Protects cells, tissues and organs.

Some invertebrates have them.

Endoskeleton

Vertebrates have them.

Internal support system.Grows as the animal grows.

Animals whose body temperature changes

with the environment.(Cold blooded.)

Ectotherm

EndothermAnimals that maintain a

constant body temperature.(Warm blooded.)

Mammal•Warm-blooded vertebrates

•Females give birth to live young

•Have hair, produce milk

Reptile•Cold-blooded vertebrates

•Covered withscales or horny plates

•Have lungs

Amphibian•Cold-blooded vertebrates•Babies live in water and use gills•Adults live on land and use lungs