Leaf Dichotomous Key

Leaf S (3RD LEAF)

• Eastern white pine

• balsam poplar

• sweet gum

• ginko

Identify leaf F

• Cydonia

• Magnolia

• Aesculus

• Fraxinus

• Ilex

A dichotomous key for trees is provided. A park ranger found a tree that has large cones and needles in groups. What species of tree has the park ranger found?

• Juniper

• Pine

• Spruce

• Fir

Leaf Q (1ST LEAF)

• Eastern white pine

• balsam poplar

• sweet gum

• ginko

Tags

NGSS.MS-LS4-2

Tool used by a taxonomist to identify an unknown organism is a:

• dichotomous key

• binomial nmenclature

• scientific name

• binomial key

What is a dichotomous key used for in biology?

• Identifying unknown organisms

• Classifying chemical compounds

• Measuring plant growth

• Analyzing DNA sequences

Which of the following is a characteristic of a dichotomous key?

• It provides two choices at each step

• It uses a numerical scoring system

• It is based on genetic analysis

• It requires laboratory equipment

In a leaf dichotomous key, what feature might be used to differentiate between two species?

• Leaf shape

• Root length

• Flower color

• Seed size

How does a dichotomous key help in identifying plant species?

• By providing a series of choices that lead to the correct name

• By analyzing the DNA of the plant

• By measuring the height of the plant

• By comparing the plant to a database of images

Which of the following steps is NOT part of using a dichotomous key?

• Choosing between two contrasting statements

• Recording the plant's height

• Following a series of steps

• Identifying the organism