Dichotomous Key
Vocabulary
Characteristics of Life
Classifying Organisms
Cladogram
100
Where do you start reading a dichotomous key?
step 1
100
Cell
the smallest unit of life
100
Which of the following is NOT a characteristic of life?
a. reproduction
b. growth and development
c. use of energy
d. multicellular organization
d. multicellular organization
100
The first word in a two-word name of an organism identifies its __________.
genus
100
Which organism has feathers?
Pigeon
200
Which is found on land and not a real plant?
astroturf
200
Organism
things that have all the characteristics of life
200
What characteristic of life can you identify in this image?
The tadpole grows and develops, into a frog, and reproduces.
200
What is the process by which organisms make new organisms?
Reproduction
200
Which organisms do not have lungs?
Hagfish and Perch
300
Which is found in water and grows in salt water?
seaweed
300
Genus
a group of similar species
300
A longnose snake sunning itself on a rock to raise its body temperature is demonstrating which characteristic of life?
a. organization
b. homeostasis
c. use of energy
d. reproduction
b. homeostasis
300
Which person devised an animal classification system 2,000 years ago?
Aristotle
300
Which characteristics do lizards have?
Claws/nails, lungs, jaws
400
which is found on land, is a real plant, and grows more than 50 m tall?
fir tree
400
Homeostasis
an organism's ability to maintain steady internal conditions when outside conditions change
400
In what way is a unicellular organism similar to a house with various rooms for various functions?
A unicellular organism has structures that perform specialized functions. Those structures are similar to the rooms of a house.
400
What evidence is used to classify living things into groups? (There are 5).
1. cell type
2. habitat
3. how the organism obtains food and energy
4. common ancestry
5. molecules within an organism
400
What characteristic separates lizards from salamanders?
claws/nails
500
List all the characteristics that a dandelion has.
found on land
is a real plant
grows less than 50 m
produces yellow flowers
500
Binomial Nomenclature
gives each organism a two- word scientific name
500
How do living things differ from nonliving things?
Living things are organized, grow and develop, reproduce, respond, maintain certain internal conditions, and use energy.
500
Which person developed the basis of the system of organism classification in use today?
Linnaeus
500
What separates a mouse from a chimp in this cladogram?
Nothing