Explore how living organisms interact with each other and their environment. These Ecology quizzes cover ecosystems, energy flow, nutrient cycles, populations, and biodiversity, with questions designed to build both core definitions and real-world reasoning.
Trace how energy moves through ecosystems, from producers to top predators and decomposers. This mixed-difficulty quiz checks your understanding of trophic levels, food chains vs. food webs, and why energy is lost at each transfer. Choose your preferred question count and difficulty, then learn from clear, multiple-choice practice.

Track how carbon, nitrogen, and phosphorus move through ecosystems—from atmosphere and oceans to soils, organisms, and back again. This mixed-difficulty quiz checks key processes, reservoirs, and human impacts, with questions that range from basics to exam-style scenarios.

Test your understanding of population growth models in ecology, from rapid exponential increase to logistic growth with carrying capacity. Work through real-world scenarios and graphs to see how limiting factors change growth over time. Mixed difficulty makes it useful for both revision and self-checking.
There are 3 quizzes with 357 questions total.
They cover ecosystems, energy flow, food webs, population ecology, nutrient cycles, and biodiversity-related concepts.
Each question is multiple-choice with 4 options, and there is no timer.
Yes. The 3 quizzes vary in difficulty and length, so you can progress from basics to more applied questions.
You’ll strengthen your understanding of core terms and your ability to reason through ecological scenarios and cause-and-effect relationships.
These quizzes help you review key ecology ideas such as ecosystems, food webs, trophic levels, population dynamics, and biogeochemical cycles.
You’ll also practice interpreting simple scenarios (like predator–prey changes or habitat loss) and connecting terms to real environmental outcomes.
Each question has 4 multiple-choice options and there’s no timer, so you can focus on accuracy and learning rather than speed.
Difficulty and length vary across the 3 quizzes, so you can start with fundamentals and then move to more applied, multi-step questions as you improve.
Ecology links biology to climate, land use, and conservation: small shifts in temperature, nutrients, or species balance can cascade through entire ecosystems.
A classic example is a “keystone species,” where changes to one species can reshape community structure and biodiversity far beyond what its population size suggests.