Ecosystem Basics Quiz

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Population, community, ecosystem topics

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Jeremiah Rector

United States

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Ecosystem Basics Quiz


Froggy Jumps Ecosystem Basics QuizOnline version Population, community, ecosystem topics by Jeremiah Rector 1 What is a population in biology? a All living organisms in an ecosystem b The physical environment where organisms live c A group of individuals of the same species living in the same area 2 How does a community differ from a population? a A population includes non-living things b A community includes all populations in an area; a population is one species c A community is smaller than a population 3 Which term describes all the living factors in an ecosystem? a Biotic factors b Abiotic factors c Carbohydrates 4 What is a keystone species? a A species at the top of the food chain b The most abundant species c A species with a disproportionate effect on its ecosystem 5 What does an ecosystem include besides living organisms? a Abiotic components like soil, water, and climate b Only animals c Only plants 6 Which term describes the gradual change in species composition over time? a Ecological succession b Photosynthesis c Evolution 7 In a food web, which organism typically performs photosynthesis? a Decomposers b Consumers c Producers (plants/algae) 8 What is population density? a The age distribution of a population b The total biomass of an area c Number of individuals per unit area or volume 9 Which interaction is beneficial to both species involved? a Mutualism b Parasitism c Predation 10 What role do decomposers play in ecosystems? a Break down dead matter and recycle nutrients b Produce energy via photosynthesis c Consume primary producers only 11 What is a population in biology? a A group of individuals of the same species living in a defined area. b The total number of species in an area. c All species living in an ecosystem. 12 What best defines a biological community? a A single population plus abiotic factors. b All the populations of different species living together in an area. c Only plants in a habitat. 13 What is an ecosystem? a A single habitat with no organisms. b A group of related species only. c A system of living organisms and their physical environment interacting. 14 Who are primary producers in most ecosystems? a Decomposers breaking down waste. b Top predators relying on others. c Organisms that synthesize organic molecules from sunlight or chemicals. 15 What are trophic levels? a Distinct feeding positions from producers up to top consumers. b Stages of cloud formation above a habitat. c Geographic layers of soil. 16 Carrying capacity refers to what? a The maximum population size sustainably supported by the environment. b The total area of the habitat. c The number of individuals born per year. 17 Why is biodiversity important in ecosystems? a It supports resilience, productivity, and resource stability. b It reduces species variety. c It only affects visible wildlife. 18 What is a keystone species? a A species with a disproportionately large impact on its ecosystem. b An invasive species with no role. c The most abundant species. 19 How can rapid population growth affect an ecosystem? a Immediate ecosystem collapse. b No impact on other species. c Increased competition and potential resource depletion. 20 What is ecological succession? a Migration of humans into an area. b The gradual change in species composition of a community over time. c Sudden extinction of all species.

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Ecosystem Basics Quiz

Froggy Jumps

About this activity

Created by

Download the paper version to play

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Ecosystem Basics QuizOnline version

by Jeremiah Rector

What is a population in biology?

How does a community differ from a population?

Which term describes all the living factors in an ecosystem?

What is a keystone species?

What does an ecosystem include besides living organisms?

Which term describes the gradual change in species composition over time?

In a food web, which organism typically performs photosynthesis?

What is population density?

Which interaction is beneficial to both species involved?

What role do decomposers play in ecosystems?

What is a population in biology?

What best defines a biological community?

What is an ecosystem?

Who are primary producers in most ecosystems?

What are trophic levels?

Carrying capacity refers to what?

Why is biodiversity important in ecosystems?

What is a keystone species?

How can rapid population growth affect an ecosystem?

What is ecological succession?