8.L.3.2 Practice Questions

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1 Name: Date: 1. In a forest community, a shelf fungus and a slug live on the side of a decaying tree trunk. The fungus digests and absorbs materials from the tree, while the slug eats algae growing on the outside of the trunk. These organisms do not compete with one another because they occupy. the same habitat, but different niches. the same niche, but different habitats. the same niche and the same habitat D. different habitats and different niches 2. The diagram below represents a food chain made up of organisms found in a field. Which row in the chart correctly identifies characteristics that can be associated with the members of this food chain? Row Producer onsumer utotroph Heterotroph (1) corn snake mouse owl (2) mouse owl snake mouse (3) corn owl corn snake (4) owl corn snake corn. (1). (2). (3) D. (4) page 1

2 3. The ecological niches of three bird species are shown in the diagram below. What is the advantage of each bird species having a different niche?. s the birds feed higher in the tree, available energy increases.. More abiotic resources are available for each bird.. Predators are less likely to feed on birds in a variety of locations. D. There is less competition for food. page 2

3 4. The graph below represents a predator-prey relationship. What is the most probable reason for the increasing predator population from day 5 to day 7?. an increasing food supply from day 5 to day 6. a predator population equal in size to the prey population from day 5 to day 6. the decreasing prey population from day 1 to day 2 D. the extinction of the yeast on day 3 5. The wrasse, a small marine fish, periodically cleans harmful parasites from the mouth and body of the moray eel. The moray, in turn, protects the wrasse from larger predators and provides it with a constant supply of food. This is an example of the type of relationship known as. mutualism. parasitism. commensalism D. saprophytism 6. In New York State, bluebirds and sparrows inhabit nearly the same ecological niche. In many areas, bluebirds are being replaced by the sparrows as a result of. symbiosis. competition. mutualism D. equilibrium page 3

4 7. Which pair of organisms would most likely compete for the same ecological niche?. bacteria and fungi. deer and wolf. tree and fungi D. deer and bacteria 8. The relationship between athlete s foot fungus and humans is known as. synthesis. mutualism. parasitism D. commensalism 9. n organism that obtains its food at the expense of another living organism is known as a. host. saprophyte. parasite D. scavenger 10. oth species of organisms in a lichen benefit from a symbiotic association called. commensalism. mutualism. saprophytism D. parasitism 11. s a bee moves from plant to plant consuming nectar, it also transfers pollen from plant to plant. oth the bee and the plants in this association are benefited. This type of symbiosis is. commensalism. mutualism. parasitism D. saprophytism 12. Which statement describes symbiotic relationships?. Different species live in close associations in an ecosystem.. biotic factors interact in an ecosystem.. Saprophytes respond to abiotic changes in an ecosystem. D. Ecosystem feeding levels show changes in energy. page 4

5 13. n overpopulation of deer in a certain area will most likely lead to. a decrease in the number of predators of the deer. an increase in the number of autotrophs available for food. a decrease in the incidence of disease D. an increase in competition between the deer 14. flea in the fur of a mouse benefits at the mouse s expense. This type of relationship is known as. commensalism. parasitism. saprophytism D. mutualism 15. The role of an organism within a community is known as its. niche. habitat. biome D. succession 16. Which type of relationship is illustrated by a protozoan causing the disease malaria in a human host?. parasitism. commensalism. saprophytism D. mutalism 17. The relationship between fleas and a dog is most similar to the relationship between. honeybees and a flower. orchids and a tree. nitrogen-fixing bacteria and a legume D. athlete s foot fungus and a human 18. protozoan lives inside a rat and takes its nourishment from the rat s body. ecause the protozoan damages the rat s brain, the rat loses its fear of cats. cat attacks an infected rat; the protozoan enters the cat s body and completes its life cycle. Which of these describes the relationship between the protozoan and the rat?. commensalism. parasite-host. mutualism D. predator-prey page 5

6 19. In his studies of birds in the Galapagos Islands, harles Darwin observed that a few bird varieties with similar beak size and shape inhabited a particular area. The limited number of similar varieties was most likely due to. competition for the same type of food. competition for a specific concentration of oxygen in the atmosphere. the presence of an excessive number of autotrophs D. the presence of a disease that attacks birds with similar beaks 20. Which organism would most likely have a predator-prey relationship?. tapeworm and dog. barnacle and whale. hawk and mouse D. rabbit and grass 21. Which factor promotes competition between organisms in an ecosystem?. cycling of minerals. decomposition of organic matter. limited resources D. presence of saprophytes 22. Many lichens are composed of fungi and algae. The fungi get sugars from the algae, and the algae get water, minerals, and proteins from the fungi. Which of the following terms best describes the relationship between the organisms in the lichens?. commensalism. competition. mutualism D. parasitism 23. Use the information below to answer the following question(s). Hummingbirds need large amounts of energy to flap their wings between 60 and 200 times per second. Their wings beat so rapidly that it is difficult to see them move. They often appear suspended in air for extended periods of time without changing their location. Hummingbirds have long bills and grooved tongues to reach into flowers to feed on flower nectar. They also feed on insects. Which term best describes the ecological relationship between hummingbirds and insects?. mutualism. parasite-host. predator-prey D. commensalism page 6

7 24. Use the information and the figure below to answer the following question(s). Many plants that grow in tropical rain forests have specialized roots that anchor them to the branches and trunks of trees. They do not harm the trees. These plants get food and water from various sources, including the air and dead organic matter found on the trees. One example of these plants found in tropical rain forests is the bromeliad. Its leaves form a cup-like structure that is able to hold water. This water provides a feeding and breeding area for many insects and frogs. Snakes and lizards also come to these plants in search of food and water. cross-section showing the inside of a bromeliad is shown below. romeliad ross-section Snakes and lizards come to the bromeliads to feed on frogs and their eggs. The relationship between the snakes, lizards, and frogs can best be described as. mutualism. parasite-host. predator-prey D. commensalism page 7

8 25. ase your answer(s) to the following question(s) on the diagram of a food web and on your knowledge of biology. State one example of a predator-prey relationship found in the food web. Indicate which organism is the predator and which is the prey. page 8

9 Problem-ttic format version c Educide Software Licensed for use by indy Rudolph Terms of Use at 05/13/ D lion/deer, lion/rabbit, hawk/mouse, mouse/cricket, or frog/cricket D D

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