Dichotomous Keys

Presentation

•

Science

•

8th Grade

•

Easy

•

NGSS

MS-ESS1-1, MS-LS4-2, MS-ESS1-2

Standards-aligned

Rebecca Smith

Used 6+ times

FREE Resource

7 Slides • 29 Questions

Multiple Choice

What is a dichotomous key used for in science?

To organize biomes

Classify organisms

Identify bacteria only

None of these

Multiple Choice

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

physical features

weather patterns

environment

diet

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

The science of describing, classifying, and naming living things is called:

Geology

Biology

Taxonomy

Chemistry

Multiple Choice

An illustration and a dichotomous key are given. What is the correct classification for this organism?

Class Insecta

Order Amblygygi

Order Araneae

Order Scorpiones

Multiple Choice

The scientific name for an organism is made from the:

class and family name

genus and species name

domain and kingdom name

kingdom and phylum name

Multiple Choice

What is the name of bird W?

Certhidea

Geospiza

Camarhynchus

Platyspiza

Multiple Choice

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

Multiple Choice

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

Multiple Choice

Which of the following characteristics will most likely be helpful in identifying a butterfly using a dichotomous key?

Migrates north every spring

hangs on branches

flutters wings fast on hot days

Wings have long extensions

Multiple Choice

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

Coleoptera

Heteroptera

Diptera

Lepidoptera

Multiple Choice

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

Coleoptera

Heteroptera

Diptera

Lepidoptera

Multiple Choice

A student discovers an arachnid with a segmented abdomen, long legs, and a tail with no stinger. The student uses the dichotomous key below to identify it. Which arachnid has the student found?

Whip Scorpion

Wind Scorpion

Daddy long legs

Scorpion

Multiple Choice

A labeled diagram of a fiddler crab is provided. Which of the following is an accurate observation of the structures of a fiddler crab? Fiddler crabs have -

five pairs of walking legs on each side.

an enlarged propodus on both front legs.

a pair of eyes on stalks at the top of the body.

two pairs or chelipeds for a total of four.

Multiple Choice

A table of arachnid and insect characteristics is shown. Which characteristic could be used to distinguish between
arachnids and insects?

Jointed legs

Body segments

Presence of eyes

Presence of antennae

Multiple Choice

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

Multiple Choice

Using this dichotomous key, identify the name of the circled Fish, J.

peacock flounder

band-tail puffer

trumpet fish

spotted goat fish

Multiple Choice

What is the name of bird Z?

Certhidea

Geospiza

Camarhynchus

Platyspiza

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

What is monster # 1 ?

Alienus quadlegicus

Alienus haircus

Alienus Tritoothicus

Alienus Blobicus

Multiple Choice

What is monster # 3 ?

Alienus Fuzzicus

Alienus Stripicus

Alienus Tritoothicus

Alienus Blobicus

Multiple Choice

What is monster # 4 ?

Alienus Fuzzicus

Alienus Stripicus

Alienus Quadlegicus

Alienus Blobicus

Multiple Choice

What is monster # 2 ?

Alienus Fuzzicus

Alienus Stripicus

Alienus Tritoothicus

Alienus Blobicus

Multiple Choice

What is monster # 5 ?

Alienus Fuzzicus

Alienus Tritoothicus

Alienus Hairicus

Alienus Blobicus

Multiple Choice

What is monster # 6 ?

Alienus Stripicus

Alienus Tritoothicus

Alienus Hairicus

Alienus Quadlegicus

Multiple Select

Which of the following best describes insect no#.8

3 pairs of legs, body has 3 parts

4 pairs of legs, body has 2 parts

5–8 pairs of legs, with other

smaller limbs

Many pairs of legs, long thin body

Multiple Choice

According to key above, which animal has wings covered by an exoskeleton and a round body?

Ladybug

Grasshopper

Dragonfly

Housefly

Multiple Choice

Which of the following is a centipede?

Multiple Choice

A student discovers an arachnid with a segmented abdomen, long legs, and a tail with no stinger. The student uses the dichotomous key below to identify it. Which arachnid has the student found?

Whip Scorpion

Wind Scorpion

Daddy long legs

Scorpion

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