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1. What is an ecosystem?
A. A community of non-interacting organisms and their physical environment.
B. A biological community of interacting organisms and their physical environment.
C.A biological community of interacting organisms and their chemical environment.
D. A community of non-interacting organisms and their chemical environment.
2. What is a habitat?
A. The natural home or environment of an animal, plant, or other organism.
B. A biological community of interacting organisms and their physical environment.
C. The interrelationship of a species with all the biotic and abiotic factors affecting it.
D. The natural home or environment of non-living organisms.
3. What is a biotic factor?
A. Any non-living component that affects the population of another organism, or the
environment.
B. Any living component that affects the population of another country.
C. Any living component that has a population.
D. Any living component that affects the population of another organism, or the
environment
4. Soil contains both abiotic and biotic materials. Which is a biotic component of soil?
A. Mineral
B. Grains of sand
C. Decomposing leave
D. Water
5. An organism that creates its own food is called:
A. A producer
B. A consumer
C. A Scavenger
D. A Decomposer
6. A consumer is:
A. An organism that produces its own food.
B. An organism that does not need food to survive.
C. An abiotic organism.
D. An organism that cannot produce its own food.
7. Which of the following is NOT an abiotic factor?
A. Decomposer C. Wind
B. Light D. Temperature
8. All ecosystems begin with the
A. animals. C. plants.
B. renewable resource. D. fungi.
9. An organism that cannot make its own food
A. consumer C. tree
B. producer D. leaf
10. Water is pumped from a well and used to irrigate a piece of land. What kind of change is
this?
A. A change in a biotic factor
B. A change in an abiotic factor
C. A change in a population
D. A change in a community
11. A ____________ breaks down waste or dead organisms and recycles nutrients.
A. consumer C. decomposer
B. producer D. omnivore
12. Which of the following lists include only biotic parts of an ecosystem?
A. Rain, Grass, Seeds, Mice
B. Sand, Air, Water, Sunlight
C. Log, Dead Grass, Fungi, Bird
D. Bacteria, Soil, Minerals, Worms
13. Which of the following is an abiotic factor that may affect the population of organisms?
A. extreme temperature C. parasites
B. food availability D. predators
14. Ecology is the study of the:
A. Abiotic parts of the environment, such as climate, air, and soil.
B. Biotic parts of the environment, such as animals and plants.
C. Interactions between organisms.
D. Interactions between organisms as well as the interactions between organisms
and their environment.
15.What is a physical environment?
A. The part of the environment that includes purely chemical factors.
B. The relationship of plants and animals to their physical, chemical and biological
environment.
C.The relationship of plants and animals to their physical and biological environment.
D.The part of the environment that includes purely physical and chemical fact​