Dichotomous Key

The tool used by a taxonomist to identify an unknown organism is a ___________ ___________.

• dichotomous key

• binomial nmenclature

• scientific name

• binomial key

Given the illustration and a dichotomous key. What is the correct classification for this organism?

• Class Insecta

• Order Amblygygi

• Order Araneae

• Order Scorpiones

Given the table of arachnid and insect characteristics, which characteristic could be used to distinguish between arachnids and insects?

• Jointed legs

• Body segments

• Presence of eyes

• Presence of antennae

Tags

NGSS.MS-LS4-2

Hikers found a tree that has large brown cones and single sharp needles. Given a dichotomous key for trees, what species of tree have the hikers found?

• Juniper

• Pine

• Spruce

• Fir

Given the illustration and dichotomous key, what is the name of bird W?

• Certhidea

• Geospiza

• Camarhynchus

• Platyspiza

Tags

NGSS.MS-LS4-2

Given the illustration and dichotomous key, what is the name of bird Z?

• Certhidea

• Geospiza

• Camarhynchus

• Platyspiza

Tags

NGSS.MS-LS4-2

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

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

• peacock flounder

• band-tail puffer

• trumpet fish

• spotted goat fish

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

• band-tail puffer

• spotted goat fish

• peacock flounder

• trumpet fish

Given a dichotomous key, to what order does an insect with two pairs of scaly wings belong?

• Coleoptera

• Heteroptera

• Diptera

• Lepidoptera