Classification: domains, kingdoms and scientific names
Grade 9 Science Worksheet - Building Confidence
Circle the best answer.
Read this first
The dog's groups from largest to smallest (real facts)
step group of the dog 1 Eukarya 2 Animalia 3 Chordata 4 Mammalia 5 Carnivora 6 Canidae 7 Canis 8 lupus Bo reads the dog's groups from largest to smallest. Which level of classification is step 5, Carnivora?
- Family: a group inside an order, holding genera
- Phylum: a group inside a kingdom, holding classes
- Order: a group inside a class, holding families
- Class: a group inside a phylum, holding orders
“real groups, not to scale” Jun reads a tree of life. Split W is at its base and makes the three groups shown. Which level of classification are these groups?
- Phyla: groups made inside each kingdom
- Kingdoms: the largest groups, made at the first split
- Classes: groups made inside each phylum
- Domains: the largest groups, made at the first split
Tree of life (real groups, not to scale)
The base of the tree makes three groups. Group Bacteria holds Escherichia coli and Deinococcus radiodurans. Group Archaea holds Haloarcula marismortui. Group Eukarya holds the honey mushroom and the garden pea.
Kira reads a tree of life. Which organism sits in the same domain as Escherichia coli?
- Haloarcula marismortui
- the honey mushroom
- the garden pea
- Deinococcus radiodurans
Luz reads a tree of life. How many domains does it show?
- Three: Bacteria, Archaea and Eukarya
- Two: Archaea are counted inside Bacteria
- Eight: one domain for each level of classification
- Five: one domain for each organism shown
A cell card (real facts)
feature what the cell has DNA location inside a nucleus with a membrane around it Milo reads a cell card. Which domain holds an organism with this kind of cell?
- Bacteria: its cells have a nucleus too
- Eukarya: its cells have a nucleus
- Plantae: a kingdom whose cells have a nucleus
- Archaea: its cells have a nucleus too
Two domains compared (real facts)
group nucleus peptidoglycan in the wall Bacteria no yes Archaea no no Noah compares two domains on a card. What do cells of Bacteria and Archaea share?
- Both sit in one domain, since they share cell features
- Both have a nucleus that holds their DNA
- Both have walls that contain peptidoglycan
- Both lack a nucleus, so both are prokaryotes
A cell card (real facts)
feature what the cell has nucleus no peptidoglycan in the wall yes Pia reads a card for a cell. Which domain fits this cell?
- Animalia: a kingdom of animal cells
- Archaea: no nucleus, so it fits Archaea as well
- Bacteria: no nucleus, and a wall with peptidoglycan
- Eukarya: its DNA sits inside a nucleus
Parts of a scientific name (real facts)
part word first word Canis second word lupus Ren reads the scientific name of the wolf. Which word is the genus?
- lupus: the second word, which names the wolf by itself
- Canis lupus: both words together make the genus
- Wolf: the common name is the genus
- Canis: the first word, written with a capital letter
Garden pea (real facts)
part word genus Pisum species sativum Tala writes the scientific name of the garden pea. Which spelling follows the rules?
- pisum Sativum: species capitalized, genus lowercase
- Pisum Sativum: both words capitalized
- Pisum sativum: genus capitalized, species lowercase
- pisum sativum: both words lowercase
Scientific names (real facts)
organism scientific name wolf Canis lupus garden pea Pisum sativum Zee reads two scientific names. Which two levels make up a scientific name?
- Species alone: one word, such as lupus
- Family and genus: two words, such as Canidae Canis
- Genus and species: two words, written in italics
- Domain and kingdom: two words, such as Eukarya Animalia