Ecosystem review

Master ecosystem concepts! Review interactions, energy flow, and biotic/abiotic factors.

Which type of interaction causes harm to one organism? parasitism mutualism cooperation commensalism Relationships in a grassland ecosystem are shown below.Which best describes the relationship between the deer mouse and the sparrow in this grassland ecosystem? competition cooperation mutualism parasitism Within a cave environment, bat waste products, called guano, are decomposed by organisms such as fungi and bacteria. These are then eaten by creatures such as flatworms. Larger animals like salamanders eat flatworms. Which correctly represents the energy flow described? Fungi → Bacteria → Salamanders → Guano Bats → Guano → Flatworms → Salamanders Salamanders → Fungi → Bacteria → Flatworms Guano → Bacteria → Flatworms → Salamanders Decomposers increase the fertility of the soil and prevent dead organisms from building up in the environment. In which way do decomposers make the soil more fertile? by adding carbon by adding nitrogen by removing excess water by removing excess minerals Many different organisms live in Amanda’s garden. The diagram shows a simple food web of some of the organisms in her garden.Predation helps maintain the stability of an ecosystem. Which statement BEST describes how this garden ecosystem can benefit from the presence of snakes? The snakes provide an energy source for the moles. The snakes consume the mice best adapted to their environment. The snakes eat moles, which allows the population of mice to increase. The snakes keep the mice from overpopulating, which could deplete plant resources. What happens to a population and to competition when there is a reduction of living space? The population expands and competition intensifies. Competition strengthens while the population contracts. The population increases as competition decreases. Competition weakens and the population decreases. Which is the BEST example of a community responding to an external factor? Plants and animals thrive on the forest floor after the fall of a white pine causes an opening in the canopy. Many species of raptors fly alongside each other during the autumn migration to warmer climates. Elephants use their tusks to dig the salt needed in their diets from the wall of a cave. Adult musk oxen in a herd surround their young to protect them from wolves. The graph below shows the relationship between available space in an ecosystem and a population of rabbits.How would the rabbit population be affected if land was cleared to build a housing development? The rabbit population would increase. The rabbit population would decrease. The rabbit population would remain stable. The rabbit population would rise temporarily, then fall. Which of these is an abiotic element of a desert ecosystem? sand cactus snake camel Which demonstrates cooperation within an ecosystem? plants growing in a garden several wolves killing a moose for food hummingbirds pollinating trumpet flowers Ecosystem Pictionary Use the the given words to identify the following pictures.- population- ecosystem- community- organism- abiotic factors Ecosystem Pictionary Use the the given words to identify the following pictures.- population- ecosystem- community- organism- abiotic factors Ecosystem Pictionary Use the the given words to identify the following pictures.- population- ecosystem- community- organism- abiotic factors Ecosystem Pictionary Use the the given words to identify the following pictures.- population- ecosystem- community- organism- abiotic factors Ecosystem Pictionary Use the the given words to identify the following pictures.- population- ecosystem- community- organism- abiotic factors Click the correct words to complete the article about ecosystem correctly. An ecosystem includes all of the living things (plants, animals and organisms) in a given area, interacting with each other, and also with their non-living environments (weather, earth, sun, soil, climate, atmosphere). Ecosystems are the foundations of the Biosphere and they determine the health of the entire earth system.Usually, biotic members of an ecosystem, together with their abiotic factors depend on each other. This means the absence of one member or one abiotic factor can affect all parties of the ecosystem.At a basic functional level, ecosystem generally contains producers (plants) capable of capturing light energy from the sun through the process called photosynthesis. This energy then flows through the food chain. Next come consumers. Consumers could be primary consumers (herbivores) or secondary consumers (carnivores). These consumers feed on the captured energy. Decomposers work at the bottom of the food chain. Dead tissues and waste products are produced at all levels. Scavengers, detritivores and decomposers not only feed on this energy but also break organic matter back into its organic constituents. Symbiotic Relationship Match Match the given pictures to the type of symbiotic relationships portrayed. parasitism mutualism commensalism mutualism mutualism Biotic and Abiotic Factors Classify the following as biotic or abiotic factors.soil heat insects mushroomlight plantsbirds humanwater air Biotic Abiotic human light birds heat plants water insects soil mushroom air