Identify natural selection
Free printable Biology science worksheet for "Identify natural selection" — practice evolution. No-prep, print or assign online.
High-school Biology students identify the mechanisms of natural selection in this Evolution worksheet, examining how variation, heritability, and differential survival drive change in populations over time. Teachers can use it to check conceptual understanding after lessons on Darwin's theory, asking students to apply the key criteria of natural selection to novel scenarios. It targets the Life Science Evolution substrand for Grades 9–12 and suits both formative assessment and discussion preparation.
Learning objectives
- Identify the key conditions — variation, heritability, and selection pressure — required for natural selection
- Explain how differential survival and reproduction lead to shifts in population traits
- Apply the mechanism of natural selection to explain a given example or scenario
Answer Key
How to use this worksheet
- Click “Download Worksheet” and sign in with Google or email to get the PDF instantly.
- Print at home or in class for High School; it's no-prep, with no extra materials needed.
- Use the included answer key to mark it in seconds.
Frequently asked questions
Is the “Identify natural selection” worksheet free?
Yes. “Identify natural selection” is a free printable Science worksheet. Sign in with Google or email to download the PDF instantly.
What grade or age is this Science worksheet for?
It's designed for High School (ages 14–18), covering Evolution.
Does it come with an answer key?
Yes — a matching answer key is included so you can grade it in seconds.
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