John Bowne High School



Base your answer to the following question on the information below and on your knowledge of biology.After the Aswan High Dam was built on the Nile River, the rate of parasitic blood-fluke infection doubled in the human population near the dam. As a result of building the dam, the flow of the Nile changed. This changed the habitat, which resulted in an increase in its population of a certain aquatic snail. The snails, which were infected, released larvae of the fluke. These larvae then infected humans. The role of the snail may be described as a A) host B) parasite C) producer D) decomposer 2. Dodder, a plant with no chlorophyll, grows on a living plant of a different species from which it obtains nutrients. Which pair of terms describes this relationship? A) parasite and host B) predator and prey C) producer and decomposer D) consumer and scavenger 3. Deer ticks are responsible for spreading Lyme disease. This organism, which feeds on the blood of warm-blooded organisms like mice, deer, and humans, is best described as a A) predator B) scavenger C) parasite D) host 4. A certain fungus can be harmful when it infects the outermost layers of the human foot, while another type of fungus can be beneficial when it recycles nutrients by breaking down dead organisms. Which terms identify these two roles of fungi? A) producer, prey B) host, autotroph C) parasite, decomposer D) herbivore, predator 5. Puppies are often given medicine to eliminate roundworms from their intestines. These worms consume some of the food the puppies have digested. The worms and the puppies represent a relationship known as predator-prey B) consumer-producer C) parasite-host D) autotroph-heterotroph 6. Which statement is an example of the interdependence of organisms? A) Owls hunt at night. B) Ants get food from insects and protect insects from predators. C) Ticks feed on the blood of animals and the ticks grow larger. D) Crows feed on dead mice. 7. A symbiotic relationship exists between two organisms of different species. If only one organism benefits from the relationship and the other is not harmed, the relationship is known as A) commensalism B) mutualism C) parasitism D) saprophytism Base your answers to questions 8 and 9 on the key below. 8. Which set of symbols indicates a relationship that is least likely to exist in nature? A) +, 0 B) –, – C) +, + D) +, – 9. A small shrimp feeds on parasites on the skin of a marine fish. Which set of symbols represents the relationship between the fish and the other two organisms? A) + with shrimp; – with parasite B) – with shrimp; 0 with parasite C) 0 with shrimp; – with parasite D) + with shrimp; 0 with parasite SYMBIOSIS Base your answers to questions 10 through 12 on the diagram below and on your knowledge of biology. anisms that are always part of the relationship indicated by letter C may be classified as A) bryophytes B) parasites C) scavengers D) carnivores 11.Which phrase belongs in area B? A) protozoa within termites B) athlete's foot fungus on humans C) nitrogen-fixing bacteria within legume nodules D) orchids on tropical trees 12. Which term belongs in area A? A) mutualism B) prey C) saprophytism D) host ................
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