Ecology: ecosystems and energy flow
20 review questions with answers for Ecology: ecosystems and energy flow. Read them here, or play the set as a class game on the projector. Free to host, and students join with a code.
All the organisms of one species living in an area?
- Community
- Ecosystem
- Habitat
- PopulationRight answer
What this set covers
Levels of organization and energy movement are covered: population, community, ecosystem and habitat, biotic and abiotic factors, trophic levels, food webs, biomass pyramids, sampling with quadrats and transects, parasitism and mutualism.
- Common mix-up
- Students often mix up a population and a community, or a habitat and an ecosystem: a population is one species, while a community includes all the species living in the same area.
- Review tip
- Draw a food chain with four organisms, label each trophic level, mark the roughly 10% energy transfer between them, and list where the rest goes.
All 20 questions and answers
All the organisms of one species living in an area?
Answer: Population
All the populations of different species living in an area?
Answer: Community
A community together with its non-living environment?
Answer: Ecosystem
The place where an organism lives?
Answer: Habitat
Non-living factor, such as temperature or light intensity?
Answer: Abiotic factor
Living factor, such as predation or disease?
Answer: Biotic factor
Organism that makes its own food by photosynthesis?
Answer: Producer
Animal that feeds on producers?
Answer: Primary consumer
Organism that breaks down dead material and waste?
Answer: Decomposer
Position of an organism in a food chain?
Answer: Trophic level
Arrows in a food chain point in the direction of…?
Answer: Energy transfer
Diagram of many interlinked feeding relationships in an ecosystem?
Answer: Food web
Diagram showing the dry mass of living material at each trophic level?
Answer: Pyramid of biomass
Approximate percentage of energy passed on from one trophic level to the next?
Answer: 10%
Process in organisms at every trophic level that releases much of the energy as heat?
Answer: Respiration
Square frame used to sample plants in an area?
Answer: Quadrat
Line along which samples are taken to study change across a habitat?
Answer: Transect
Container sunk into the ground to catch crawling insects?
Answer: Pitfall trap
Relationship in which one organism benefits and its host is harmed, as with a tapeworm?
Answer: Parasitism
Relationship in which both species benefit?
Answer: Mutualism
Play it as a class game
Play this set opens it in splycr, where you can host it for your class straight away. Hosting needs no account: put the room code on the projector, and students join from a phone with the code and their first name. Each question plays as multiple choice, and the three wrong options were written for that question.