Domains of Life
This domain includes organisms with no nucleus and lives in normal environments.
What is Bacteria?
This kingdom includes multicellular organisms that make their own food through photosynthesis.
What is Plantae?
An organism that eats other organisms for energy is called this.
What is a heterotroph?
This tool helps scientists identify organisms by answering a series of yes/no questions.
What is a dichotomous key?
This scientist developed the system of binomial nomenclature.
Who is Carl Linnaeus?
This domain includes extremophiles that live in hot springs, salty lakes, or acidic conditions.
What is Archaea?
This kingdom includes organisms like mushrooms and molds that decompose organic material.
What is Fungi?
Organisms that have cells without a nucleus are described with this term.
What is prokaryotic?
Each question in a dichotomous key has this kind of answer.
What is yes or no?
The two parts of a scientific name.
What are genus and species?
This domain includes all organisms with eukaryotic cells.
What is Eukarya?
Unicellular eukaryotes that are not plants, animals, or fungi belong here.
What is Protista?
The type of reproduction involving only one parent.
What is asexual reproduction?
You’re making a key for birds. Give an example of a yes/no trait you might use.
Answers may vary: Does it have webbed feet?
Before classification systems existed, organisms were often grouped based on this.
What is appearance/common use?
The main difference between Archaea and Bacteria is this.
What are differences in cell wall structure and genetic makeup?
This kingdom includes multicellular, heterotrophic organisms with no cell walls.
What is Animalia?
Name two characteristics shared by all living things in the Animal Kingdom.
What are multicellular and heterotrophic?
If your dichotomous key leads to the wrong organism, this is most likely the problem.
What is a poorly chosen or unclear characteristic?
Why is using scientific names more useful than common names?
What is because they are universal and reduce confusion?
Name all three domains in order from least to most complex.
What are Bacteria, Archaea, Eukarya?
Name all six kingdoms.
Name all six kingdoms.
What are Archaebacteria, Eubacteria, Protista, Fungi, Plantae, Animalia?
Which two kingdoms include both autotrophs and heterotrophs?
Which two kingdoms include both autotrophs and heterotrophs?
What are Protista and Eubacteria?
You are given four mystery creatures: a spider, a frog, a butterfly, and a worm. Write the first two steps of a dichotomous key that could begin to separate them based on observable characteristics.
Answer Example:
1a. Has legs → go to 2
1b. No legs → Worm
2a. Has wings → Butterfly
2b. No wings → go to 3 (continues...)
Explain how Linnaeus’s system influenced the modern six-kingdom classification.
What is it introduced organization by physical traits and established the hierarchy of taxonomic levels.