Amoeba Sisters Dichotomous Keys

A botanist discovers a new plant in the jungle. Which of the
following observations of the plant’s characteristics would be useful in determining its identity with a dichotomous key?

• It was discovered in the summertime

• It is wet from a recent rain storm.

• Its leaves curl up on the edges.

• It is eaten by native jungle ants.

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

• physical features

• weather patterns

• environment

• diet

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 step do we always start with when using dichotomous keys?

• 1

• 2

• 3

• 4

What is a dichotomous key used for in science?

• To organize biomes

• Classify organisms

• Identify bacteria only

• None of these

This is a good example of a:

• Binomial Nomenclature

• Field Guide

• Dichotomous Key

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.

• band-tail puffer

• spotted goat fish

• peacock flounder

• trumpet fish

Tags

NGSS.MS-LS4-2

What is the purpose of a dichotomous key?

• to find a common ancestor

• to show the evolution of organisms

• to see what organisms eat

• to identify organisms