To put things in groups.
The highest or most general group of organisms.
The next level of classification below kingdom.
The next level of classification below phylum.
The lowest level of classification.
Animals with backbones that surround the spinal cord.
Animals without backbones.
What skills did members of Lewis and Clark's team use to describe organisms?
They described hundreds of animals and plants. They also collected many samples of plants and animals.
What characteristics should be observed to classify organisms?
Observe each organism carefully, then compare and contrast observations with known plants and animals.
What could biologists conclude if an organism they found had charateristics unlike any organisms used for comparison?
The plant or animal could be put into a new group.
Describe how a biologist works with organisms.
Biologists classify a living thing by comparing and contrasting the living thing's physical characteristics with physical characteristics of known organisms.
What does a classification system do?
A classification system helps organise information and makes communication more exact.
Today's classification system is still changing. What are the levels fo the classification system?
Kingdom - the highest level, phylum - the next level, class - the level below phylum, and species - the lowest level.
What are the six kingdoms (general, used for comparison)?
Archaebacteria, Eubacteria, Protists, Fungi, Plants, Animals.
Why does today's classification system include six kingdoms when originally there were only two?
Use of the microscope led to the discovery of new organisms and the identification of differences in cells. A two-kingdom system was no longer useful.
Are all animals the same and if not why not?
Every animal has characteristcs that distinguish it from other animals.
Almost all animals do not have backbones. Those that do are classified as _______________.
Mammals are vertebrates that breathe air using lungs, have hair for fur, and nurse young that resemble parents at birth.
What are five types of vertebrates?
Mammals, birds, reptiles, amphibians and three classes of fish.
How many cells does a multicellular organism such as a bear have?
Multicellular organisms have many cells. The bear has over a trillion cells.
What are three of the features that make animals different from other organisms?
They are multicellular, cannot make their own food, and can move on their own during part or all of their lives.
Create a Venn Diargram. Compare and contrast a bear and a squirrel.
Reptiles are _________ vertebrates with lungs. Most young hatch from eggs and are ready to feed themselves from birth. In addition, reptiles have _______ with scales rather than hair, fur, or feathers.
Cold-blooded. Tough, dry skin.
Birds are ______ vertebrates with lungs and feathers. Birds lay hard-shelled eggs. When baby birds are hatched, they must be fed by parents
How are birds and mammals alike?
They have many organs similiar to mammals such as eyes, tongues, and bones.
Why is the ability to fly not a defining characteristic of birds?
Not all birds can fly.
Why are young birds hatched with parents present, while moste young reptiles hatch long after parents have left the nest?
Reptiles are born ready to find their own food, birds are born needing to be fed by their parents.