5 Written questions
5 Matching questions
- Secondary consumers
- Aerobic respiration
- Tertiary consumers
- Primary consumers
- a Animals that feed on animal-eating animals. They feed at high trophic levels in food chains and webs. Examples are hawks, lions, bass, and sharks. Compare detritivore, primary consumer, secondary consumer.
- b The carnivores in an ecosystem; organisms that feed on primary consumers
- c The process in which pyruvic acid is broken down and NADH is used to make a large amount of ATP; the part of respiration that is carried out in the presence of oxygen.
- d The study of how living things interact with each other and their environment
- e Organisms that are unable to produce their own energy. They must eat producers to obtain energy. Also called: consumers.
5 Multiple choice questions
- A group of individuals of the same species that live together in the same area at the same time
- A measure of the total dry mass of organisms within a particular region
- Process in which certain organisms (mostly specialized bacteria) extract inorganic compounds from their environment and convert them into organic nutrient compounds without the presence of sunlight. Compare photosynthesis.
- Nonliving; specifically, the nonliving components of an ecosystem, such as temperature, humidity, the mineral content of the soil, etc.
- 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
Biogeochemical cycles → The elements and compounds that make up nutrients move continually through air, water, soil, rock and living organisms in ecosystems and in the biosphere
Herbivores → Organisms that eat other animals for energy
Natural greenhouse effect → Anticipated increase in Earth's temperature, caused by carbon dioxide (emitted by burning fossil fuels) trapping some of the radiation emitted by the surface.
Carbon cycle → Cyclic movement of sulfur in different chemical forms from the environment to organisms and then back to the environment.
Detritivores → Commonly digest decomposers that live on, and in, detritus particles, which they chew and grind into even smaller pieces.