Definitions
Define endotherm and give an example
Constant internal body temperature
Define invertebrate and give an example
No backbone, e.g. worm
List the 7 groups of classification that Linnaeus came up with in order of most broad to most specific.
Kingdom, phylum, class, order, family, genus, species
Why do scientists classify?
You need 2 reasons.
To avoid confusion,
compare similarities and differences,
Study how things are related
What is a controlled variable?
Variable that remains the same
Define ectotherm and give an example
Body temp that changes with the environment
List three characteristics of eukaryotes and multicellular organisms
1. Multiple cells
2. Has nucleus
3. More complex
Who was Aristotle and what was his classification system?
Philosopher
Plants and animals
Are mules their own species?
Why/why not?
No, unable to successfully breed.
What is an independent variable?
Variable that is changed/manipulated
Define exoskeleton and provide an example
Animal with skeleton external
E.g. spider
List three characteristics of prokaryotes or unicellular organisms
1. No nucleus
2. One cell
3. Simple, tiny
4. Bacteria kingdom
What are the 5 kingdoms?
Plants, animals, fungi, protists, bacteria/monera
Name all 7 characteristics of living things.
MRS GREN
What is a dependent variable?
Variable that is measured
Define endoskeleton and give an example
Skeleton on the inside. E.g. human
Define species
Organisms that look alike and can successfully breed
What categories are phylum broken into?
Vertebrate and invertebrate
Name 3 ways indigenous people classify things
Totemic, edible, use (dead or alive)
What type of symmetry do humans have?
Bilateral
Define vertebrate and give an example
Has a backbone e.g. human
Define biology
The study of living things
What are the 5 categories of vertebrate?
Mammals, amphibians, reptiles, birds, fish
What is a dichotomous key?
Tool used to identify species, series of yes/no questions
Name two organisms that have radial symmetry.
Star fish, sea urchin