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Course information comes from the public UCLA General Catalog. Requisites are read from UCLA’s published wording and can be incomplete or out of date — check the official catalog listing and your department adviser before you enroll.

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EE BIOL 100Introduction to Ecology and Behavior

Ecology and Evolutionary Biology · 5 units · Undergraduate upper division (100-199)

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Not open for credit to students with credit for course 118, 122, 124A, 124B, 125, C126, 129, 132, 134B, 136, or 151B. Introduction to methods and topics in ecology and behavior. Growth and regulation of populations, organization of communities and ecosystems, biogeography, and behaviors animals use to find food, choose mates, and interact in social groups.

Letter grading.

When it runs

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Requisites

Official UCLA wording

Requisite: Life Sciences 7B.

BruinTree reads · Prerequisite

confidence 1.00 · from UCLA’s structured data
LIFESCI 7B

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Requires

Everything that has to come before this course, not just the courses named in the requisite above.

EE BIOL 100

  • LIFESCI 7BGenetics, Evolution, and Ecology
    • LIFESCI 7ACell and Molecular Biology

1 direct requisite. The whole upstream is here — 2 courses over 2 levels. Every course here opens its own tree.

Unlocks

What this course is a requisite for, and what those courses lead to in turn.

EE BIOL 100

  • EE BIOL 100LIntroduction to Ecology and Behavior Laboratory
  • EE BIOL 122Ecology
    • EE BIOL 123AField Marine Ecologyanother path to it
    • EE BIOL 123BField Marine Ecologyanother path to it
  • EE BIOL 123AField Marine Ecology
  • EE BIOL 123BField Marine Ecology
  • EE BIOL 124AField Ecology
  • EE BIOL 124BField Ecology
  • EE BIOL C126Behavioral Ecology
  • EE BIOL 129Animal Behavior
  • EE BIOL 132Field Behavioral Ecology
  • EE BIOL 136Ecological Restoration
  • EE BIOL 151BField Tropical Ecology
  • EE BIOL 183Finding Ecological Solutions to Environmental Problems
  • EE BIOL C242Behavioral Ecology

13 courses list this as a requisite. The whole downstream is here — 15 courses over 2 levels. Every course here opens its own tree.

  • Fall 2025
  • Winter 2026
  • Spring 2026
  • Summer 2026
  • Fall 2026
  • Spring 2027

Scheduled, not typical — from UCLA’s Schedule of Classes, which publishes Fall 2025 through Spring 2027 and nothing before it.