Page 59 - Science Course 1 (Book 1)

Mo2-L3a: How are Organisms Classified?

SUMMARY
How are Organisms Classified?

All organisms are classified into one Every organism has a unique
of three domains: species name.
Bacteria, Archaea, or Eukarya.
Blue Crab

Scientific Name:
Bacteria Eukaryota Callinectes Sapidus
Genus Name Specific Epithet

Archaea

A dichotomous key helps to identify an unknown
organism through a series of paired descriptions. Has the mini-beast got legs?

Has it got wings? Has it got a shell?

Has it got more Is it active
than eight legs? at night Worm Snail

Centipede Spider Moth Butterfly

Mo2-L3: Vocabulary Review

Directions: Use the clues and the terms listed below to complete the puzzle. Then on each line, write the term
from the word bank that correctly completes each sentence

binomial nomenclature
cladogram
dichotomous key
genus
kingdom
species

6. A diagram called a shows the relationships among organisms.
7. The system of gives every organism a two-word scientific name.
8. is the classification category above phylum and below domain.

9. A can be used to identify an unknown organism.
10. A is a group of organisms that have similar traits and produce fertile
offspring.
11. A is a group of similar species.
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