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Grade 11 Natural Selection & Adaptation Worksheet with Answers

Grade 11 (US) · Year 12 (UK) · Class 11 (India) · Biology

Unit 3: EvolutionNatural SelectionNGSS HS-LS4-4

Variation, mutation and natural selection, and how populations change over generations. This free high school worksheet has 11 questions and a full answer key. Print it or save it as a PDF — every answer is checked by code, not guessed.

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Natural Selection & Adaptation

Grade 11 · Biology

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Learning goal: Natural Selection · NGSS HS-LS4-4

Directions: Read each question carefully and write your answer on the line.

RememberNatural selection

Variationtraits differToo manyyoungnot all surviveCompetitionfood, spaceBest-suitedsurviveand reproduceTraitsspreadover generations
  1. 1

    Give an example of artificial selection.

  2. 2

    Darwin's finches had different beak shapes. Why?

  3. 3

    Do individuals evolve during their lifetime?

  4. 4

    What is variation?

  5. 5

    Peppered moths turned darker during the Industrial Revolution. Why?

  6. 6

    Why do bacteria become resistant to antibiotics?

  7. 7

    What is a mutation?

  8. 8

    What evidence supports evolution?

  9. 9

    What is artificial selection?

  10. 10

    What is natural selection?

  11. 11

    Who developed the theory of evolution by natural selection?

★ Challenge corner for fast finishers

Why does a spinning ice skater spin faster when she pulls her arms in?

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Free printable worksheets with answer keys · aethelsystems.com/worksheets/biology/11/natural_selection

Answer key (click to show)
  1. 1.dog breeds or crop varieties (any one)
  2. 2.beaks adapted to different foods on different islands
  3. 3.no — populations evolve over generations
  4. 4.differences in traits among individuals of a species
  5. 5.dark moths were better hidden on sooty trees and survived more
  6. 6.resistant bacteria survive and pass on the trait
  7. 7.a change in DNA
  8. 8.fossils, DNA similarities and similar body structures
  9. 9.humans breeding plants or animals for chosen traits
  10. 10.individuals with helpful traits survive and reproduce more
  11. 11.Charles Darwin
  12. ★conservation of angular momentum (challenge corner)

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