Dichotomous Key

Identify the plant shown

• A

• B

• C

• D

Tags

NGSS.4-LS1-1

What class of vertebrates does organism T belong to?

• Amphibians

• Birds

• Fish

• Mammals

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

Is the right answer for classifying this organism chosen on this dichotomous key?

• Yes

• No

Look at the dichotomous key below. What are the characteristics of salamander?

• Can fly

• cannot fly

• scales

• no fur

What is the name of bird Z?

• Certhidea

• Geospiza

• Camarhynchus

• Platyspiza

Tags

NGSS.MS-LS4-2

Look at the dichotomous key below. What are the characteristics of fish?

• Can fly

• cannot fly

• scales

• fins

Which of the paired statements could be used to tell the difference between the two insects using a dichotomous key?

• Has 6 legs

  Has 8 legs

• Large hind legs

  Small hind legs

• 2 pairs of spots on wing cover

  3 pairs of spots on wing cover

• Antennae absent

  Antennae present

What is a dichotomous key primarily used for in biological sciences?

• To classify organisms based on evolutionary history

• To identify organisms using a series of choices

• To measure the growth rate of plants

• To analyze the genetic makeup of organisms

Which of the following best describes a dichotomous key?

• A tool that uses a series of paired statements to identify organisms

• A chart that shows the evolutionary relationships between species

• A diagram that illustrates the food chain

• A list of all known species in a particular area