Online College Courses for Credit

+
Student Exploration- Dichotomous Keys (answers)

Student Exploration- Dichotomous Keys (answers)

Rating:
Rating
(0)
Author: Jack Bauer
Description:

http://www.thestudentsoffortune.com/products.php?product=Student-Exploration%252d-Dichotomous-Keys-%28answers%29

Student Exploration: Dichotomous Keys

Vocabulary: dichotomous key, genus, organism, scientific name, species, and traits

Prior Knowledge Question (Do this BEFORE using the Gizmo.)

Jerome is walking through a park when he sees the spider shown at left. How could Jerome find out what type of spider it is?

Gizmo Warm-up

In the field, scientists often have to identify an unfamiliar organism (living thing). A reliable way to identify organisms is to use a dichotomous key. A dichotomous key is a series of paired statements or questions that lead to the identification of an organism.

The Dichotomous Keys Gizmo™ allows you to use five different dichotomous keys to identify a variety of organisms. To begin, make sure California Albatrosses and Organism A are selected.

Read the two statements at lower right. Which of the two statements most closely matches the characteristics of the bird pictured?

Select that statement and click Next. Continue until you have correctly identified the albatross. If you change your mind about a choice, you can click the Back button. If you incorrectly identify the albatross, you can click the Start Over button and try again.

What is the name of the albatross?

The scientific name is shown in italics. Scientific names have two parts: the genusname and the species name. What is the scientific name of this albatross?

Activity A:



Use a dichotomous key


Get the Gizmo ready:

Make sure the California Albatrosseskeyis selected.
Select Organism B.




Introduction: As you saw on the previous page, a dichotomous key can help you identify an organism using its characteristics, or traits. The keys in this Gizmo use only physical traits, such as feather color, to identify organisms. In some cases, behavioral traits are used in dichotomous keys. For example, some frog species can be identified by their croaks.

(more)
See More
Fast, Free College Credit

Developing Effective Teams

Let's Ride
*No strings attached. This college course is 100% free and is worth 1 semester credit.

37 Sophia partners guarantee credit transfer.

299 Institutions have accepted or given pre-approval for credit transfer.

* The American Council on Education's College Credit Recommendation Service (ACE Credit®) has evaluated and recommended college credit for 32 of Sophia’s online courses. Many different colleges and universities consider ACE CREDIT recommendations in determining the applicability to their course and degree programs.

Tutorial