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EcosystemsRv
Ecosystems Review
| Question | Answer |
|---|---|
| The nonliving parts of an ecosystem are called _____________________. | abiotic factors. |
| All the biotic and abiotic factors in an area together make up an _________________. | ecosystem |
| Water, sunlight, and soil are ________________________ factors in an ecosystem. | abiotic |
| All the different populations that live together in an area make up a _______________________. | community |
| The smallest unit of ecological organization is a single _______________. | organism |
| Energy enters most ecosystems from _____________________________. | sunlight |
| A pack of gray wolves in a forest is an example of a __________________________. | population |
| If the birth rate of the population is less than the death rate, the population would ___________________________ in size. | decrease |
| A _____________ _______________ shows the feeding relationships in an ecosystem. | food chain |
| An organism that makes its own food is a called a _________________. | producer |
| The first organism in a food chain is always a ____________________. | producer |
| The many overlapping food chains in an ecosystem make up a _______________ ________________. | food web |
| A diagram that shows the amount of energy that moves from one feeding level to another in a food web is called an __________________ ______________________. | energy pyramid |
| Consumers that eat both plants and animals are classified as _________________________. | omnivores |
| Mold and some bacteria are ___________________________ that obtain energy by breaking down wastes and the remains of dead organisms. | decomposers |
| A _______________________ is an organism that cannot make its own food. | consumer |
| A group of ecosystems with similar climates and organisms is called a _______________________________. | biome |
| The _________________ biome receives less than 25 centimeters of rain per year. | desert |
| A canopy, an understory, and an extremely high number of plant and animal species are characteristics of the ________________________ biome. | tropical rain forest |
| The number of different species in an area is referred to as its _________________. | biodiversity |
| The most diverse ecosystems on Earth are _____________________ ___________________ _________________________. | tropical rain forests |
| Plants growing on a new island formed by the eruption of an undersea volcano are an example of _____________________ ___________________. | primary succession |
| ________________________ species such as lichens are the first to grow in an area with no soil. | Pioneer |
| The type of succession that occurs in an area where an ecosystem previously existed is called ___________________________ succession. | secondary |
| ___________is an interaction in which one organism hunts and kills another for food. | Predation |
| __________ is a close relationship between two species that benefits at least one species. | Symbiosis |
| _________ is a type of symbiosis in which both species benefit. (Example: E. coli and the human digestive tract) | Mutualism |
| ___________ is a type of symbiosis in which one species benefits and the other species is neither helped nor harmed. (Example: Hawks living on saguaro cactus) | Commensalism |
| __________ is a type of symbiosis in which one species lives on or in another and harms it. (Example: flea living on a dog) | Parasitism |
| __________ are organisms that make their own food. (examples would be producers such as plants) | Autotrophs |
| _________ are organisms that consume their food (such as primary/secondary consumers) | Heterotrophs |
Created by:
lschramme
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