Dichotomous Key Identification Activity

Erin Lomax, an education specialist at the Smithsonian Marine Ecosystems Exhibit, introduces a module on using dichotomous keys, aimed at students in grades 5-8. The module includes a video overview, a dichotomous key activity for identifying seashells, and a photo key for those without physical shells. Erin explains the importance of classifying organisms and provides an example using cleaner shrimp to demonstrate how dichotomous keys help identify species. The module includes all necessary materials and contact information for questions.

What is the role of Erin Lomax at the Smithsonian Marine Ecosystems Exhibit?

• Aquarium Manager

• Education Specialist

• Marine Biologist

• Research Scientist

For which grades is the dichotomous key module best suited?

• Grades 6 through 9

• Grades 7 through 10

• Grades 5 through 8

• Grades 3 through 5

Why is classifying organisms important in science?

• To create new species

• To definitively identify species

• To eliminate similar species

• To increase biodiversity

What does the term 'dichotomous' mean?

• Divided into two parts

• Separated into multiple parts

• Divided into three parts

• Combined into one part

What is the first question in the simple dichotomous key example for vertebrate animals?

• Does it have fins?

• Does it have feathers?

• Does it have scales?

• Does it have fur?

How can a dichotomous key help in identifying species?

• By giving a detailed description of each species

• By showing pictures of all species

• By offering a series of yes-or-no questions

• By providing a list of all species

What distinguishing feature was used to differentiate between the two shrimp species in the example?

• Shape of the claws

• Pattern on the tail

• Size of the shrimp

• Color of the shell

What materials are included in the dichotomous key activity packet?

• A set of seashells and a magnifying glass

• A video tutorial and a textbook

• A series of yes-or-no questions and a photo key

• A list of species names

What should students do if they have questions during the activity?

• Search online for answers

• Contact the education team at the aquarium

• Wait until the next class

• Ask their classmates

What is the best way to contact the aquarium's education team?

• By email

• By phone

• By sending a letter

• By visiting in person