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In this outdoor activity, learners find the swollen bumps known as "galls" on various plants and get a closeup look at the parasitic animals living inside. Galls form on various plants including rosebushes, oaks, elms and willows after a female insect places one or more eggs into the living tissue of a branch or leaf. Learners explore what the galls provide, such as food or protection, as eggs become larvae, and what effects larvae have on their specific host plants.

Quick Guide


Learning Time:
45 to 60 minutes

Estimated Materials Cost:
$5 - $10 per group of students

Age Range:
Ages 8 - 18

Resource Type:
Activity

Language:
English

Materials List (per group of students)


  • strips of bright cloth or plastic flagging
  • bug boxes or hand lenses
  • plastic bags
  • 1 or 2 sharp knives
  • 3 or 4 pairs of tweezers
  • data board or large drawing pad
  • felt pen

Subjects


  • Life Sciences
    • Diversity of Life
      • Plants
      • Animals
    • Ecology
      • Ecosystems

Informal Categories


  • Animals
  • Nature and Environment
  • Outdoor Activity

Audience


To use this activity, learners need to:

  • see
  • be mobile
  • touch

Learning styles supported:

  • Involves teamwork and communication skills
  • Involves hands-on or lab activities

Other


This resource is part of:

Access Rights:

  • Free access

By:

Rights:

  • All rights reserved, The Regents of the University of California, 1982