Dichotomous Key

The first part of a scientific name is an organism's _______________ and the second part is its ________________.

• species, genus
• phylum, order
• class, spices
• genus, species

What step do we always start with when using dichotomous keys?

• 1
• 2
• 3
• 4

A dichotomous key for trees is provided. Hikers found a tree that has large brown cones and single sharp needles. What species of tree have the hikers found?

• Juniper
• Pine
• Spruce
• Fir

What is the purpose of a dichotomous key?

• to find a common ancestor
• to show the evolution of organisms
• to show relationships between organisms
• to identify organisms

When using a dichotomous key to identify organisms, what do we look at?

• characteristics

• weather patterns

• environment

• diet

Tags

NGSS.MS-LS4-2

A dichotomous key for insects is given. To what order does an insect with two pairs of scaly wings belong?

• Coleoptera
• Heteroptera
• Diptera
• Lepidoptera

The first part of a scientific name is an organism's _______________ and the second part is its ________________.

• species, genus
• phylum, order
• class, spices
• genus, species

What is the scientific name of housefly?

• Musca domestica
• Insect domestica
• Animalia domestica
• Diptera domestica

What is the genus: Castor canadensis?

• Castor canadensis

• Castor

• canadensis

The word "dichotomous" means...

• divided into two parts

• not living

• two cots for me to sleep on