Dichotomous Keys Skills Check

What step do we always start with when using dichotomous keys?

The word "dichotomous" means...

• divided into two parts

• not living

• two cots for me to sleep on

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

• physical features

• weather patterns

• environment

• diet

Tags

NGSS.MS-LS4-2

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?

What is monster # 4 ?

• Alienus Fuzzicus

• Alienus Stripicus

• Alienus Quadlegicus

• Alienus Blobicus

What is the name of bird W?
(a)  

• Geospiza
• Certhidea
• Camarhynchus
• Platyspiza

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

Identify leaf F

(a)  

• Magnolia
• Cydonia
• Aesculus
• Fraxinus
• Ilex

A student examines the winged insect using the picture.

Based on the key, in what order should this insect be classified?

Tags

NGSS.MS-LS4-2

An illustration and a dichotomous key are given. What is the correct classification for this organism?