AI Tutor

lesson

Constructing and Interpreting Dichotomous Keys

Biological Classification, Taxonomy, and Phylogenetics

7th Grade·Science·Open Global Science

Updated 1 month ago · 5 views

Design and use paired-statement dichotomous keys to systematically identify unknown organismal specimens.

Premium Lesson

Upgrade to unlock this lesson, practice questions, and your personal tutor.

This lesson is part of a track

Public learning track

Biological Classification, Taxonomy, and Phylogenetics

7th Grade · Science · Open Global Science

6 lessons

Goal

Classify living organisms using Linnaean taxonomy, dichotomous identification keys, and phylogenetic branching trees.

6 lessons

0 of 6 done

The Three-Domain and Six-Kingdom Classification SystemUp next
Hierarchical Taxonomic Ranks from Domain to SpeciesNot started yet
Constructing and Interpreting Dichotomous KeysYou are here
Using Anatomical Traits for Organism IdentificationNot started yet
Interpreting Cladograms and Phylogenetic TreesNot started yet
Molecular Evidence in Modern TaxonomyNot started yet

View full track

Learning standards covered

OGS.8.LS.3Open Global Science Standards 2026™ · 7th Grade

Classify living organisms into taxonomic groups based on cellular and anatomical characteristics, constructing and utilizing dichotomous keys and phylogenetic tools.