Cladogram and 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.

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 a dichotomous key used for in science?

• To organize biomes

• Classify organisms

• Identify bacteria only

• None of these

What is monster ?

• Alienus quadlegicus

• Alienus haircus

• Alienus Tritoothicus

• Alienus Blobicus

What is monster # 4 ?

• Alienus Fuzzicus

• Alienus Stripicus

• Alienus Quadlegicus

• Alienus Blobicus

What is monster # 5 ?

• Alienus Fuzzicus

• Alienus Tritoothicus

• Alienus Hairicus

• Alienus Blobicus

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

What is the name of bird Z?

• Certhidea

• Geospiza

• Camarhynchus

• Platyspiza

Tags

NGSS.MS-LS4-2

Which of the following best describes a cladogram?

• A diagram that shows evolutionary relationships among organisms

• A tool used to identify organisms based on physical characteristics

• A chart that displays the genetic code of an organism

• A graph that measures the growth rate of a species

Tags

NGSS.MS-LS4-2

What is the primary purpose of a dichotomous key?

• To classify organisms based on their evolutionary history

• To identify organisms by answering a series of questions

• To measure the genetic variation within a population

• To track the migration patterns of animals