Dichotomous Keys Practice

Multiple Choice

Which shark is the picture of?

• Cow Shark

• Great White Shark

• Hammerhead Shark

• Saw Shark

Multiple Choice

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

Multiple Choice

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

• 1

• 2

• 3

• 4

Multiple Choice

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

• physical features

• weather patterns

• environment

• diet

Multiple Choice

How many options should every branch in a dichotomous key have?

• 1

• 2

• 3

• 4

Multiple Choice

Term given to describe the 2 name naming system is:

• dichotmous key

• binomial nomenclature

• 2 scientific names

• binomial key

Multiple Choice

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

Multiple Choice

The largest grouping of organisms is ____________________ and the smallest is _________________________________.

• Domain, species

• Domain, kingdom

• Species, domain

• Kingdom, species

Multiple Choice

What should you do when typing a scientific name?

• Capitalize the first word

• Capitalize the first word and underline the whole thing

• Capitalize the first word and italicize the whole thing

• Nothing

Multiple Choice

A dichotomous key starts with______ information and leads to _______ information

• specific, general

• general, specific

• known, unknown

• major, minor

Multiple Choice

Using this dichotomous key, identity the name of the circled fish.

• band-tail puffer

• spotted goat fish

• peacock flounder

• trumpet fish

Multiple Choice

If you were to make a dichotomous key to identify this organism, which option would NOT be used?

• Presence of webbed feet

• Presence of tail

• Fur on the body

• Ability to swim

• Absence of wings

Multiple Choice

What is the function of gills in fish?

• to help the fish breathe on land

• to help the fish use oxygen dissolved in water

• to help the fish use oxygen in the air and the water

• to help the fish use oxygen slowly in the air

Multiple Choice

Dichotomous keys are used to _______ already classified organisms by physical characteristics.

• classify

• identify

• choose

• guess

Multiple Choice

The diagram shows a fish. Identify whether it is fish A, B, C, or D.

• A

• B

• C

• D