5 Written questions
5 Matching questions
- a All the organisms that inhabit a particular area; an assemblage of populations of different species living close enough together for potential interaction.
- b A catabolic process that makes a limited amount of ATP from glucose without an electron transport chain and that produces a characteristic end product, such as ethyl alcohol or lactic acid.
- c Organisms that produce their own food
- d The entire portion of Earth inhabited by life; the sum of all the planet's ecosystems.
- e A measure of the total dry mass of organisms within a particular region
5 Multiple choice questions
- Organisms that rely on other organisms for their energy and food supply
- Process by which plants and some other organisms use light energy to convert water and carbon dioxide into oxygen and high-energy carbohydrates such as sugars and starches.
- All organisms that are the same number of energy transfers away from the original source of energy (for example, sunlight) that enters an ecosystem. For example, all producers belong to the first trophic level, and all herbivores belong to the second trophic level in a food chain or a food web.
- The rate at which an ecosystem's producers capture and store a given amount of chemical energy as biomass in a given length of time. Compare net primary productivity.
- Diagram representing the flow of energy through each trophic level in a food chain or food web. With each energy transfer, only a small part (typically 10%) of the usable energy entering one trophic level is transferred to the organisms at the next trophic level. Compare pyramid of biomass, pyramid of numbers.
5 True/False questions
Ecosystems → All the organisms in a given area as well as the abiotic factors with which they interact; a community and its physical environment
Atmosphere → The entire portion of Earth inhabited by life; the sum of all the planet's ecosystems.
Net Primary Productivity (NPP) → The rate at which an ecosystem's producers capture and store a given amount of chemical energy as biomass in a given length of time. Compare net primary productivity.
Abiotic → Pertaining to life; environmental factors created by living organisms
Carnivores → Organisms that obtain energy by eating only plants