GSE Grade 7 Life Science - S7L4 Diagnostic Ecosystem
Quiz by GADOE
Grade 7
Science
Georgia Standards of Excellence
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10 questions
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- Q1Scientists discover that chemicals dumped in a river have caused trout, a type of fish, to die. What other living things will be MOST affected by the trout dying?bears that eat the troutanimals that drink the waterfishermen that catch the troutplants that live at the edge of the river30sS7L4c
- Q2Many chemicals are used to kill insects and protect plants. How could the removal of insects upset the balance of the ecosystem?The plants would rapidly decrease in number.Insects from other regions would replace the killed insects.Animals that eat the insects would die as well.The animals in the ecosystem would eat all the plants.30sS7L4c
- Q3In the hills of North Carolina, several different species of wrens live in one large pine tree. This is possible because the wrenshave different natural enemies.breed at different times.eat different foods found in and on the tree.must have the resource competition from the other wren species.30sS7L4a
- Q4If the bald eagle was removed from this food web, what effect would this have on the population of the other species?The tundra swans would decrease in population size because they are eaten by the bald eagle and the vegetation would increase in population size.The benthic invertebrates would decrease in population size because they are eaten by the sea ducks and the phytoplankton would increase in population sizeThe bivalves would increase in population size because they are eaten by sea ducks and the phytoplankton would decrease in population size.The wading birds would increase in population size because they are eaten by the ospreys and the small planktivorous fish would increase in population size.30sS7L4c
- Q5Which BEST determines the number of wolves that can live in an area?The amount of food available in the areathe amount of snow in the area each yearthe number of birds that live in the areathe number of trees in the area30sS7L4c
- Q6Kudzu vines grow by climbing and wrapping around trees. Trees covered by kudzu can die because they are starved of sunlight. What type of relationship exists between the trees and the kudzu growing on them?parasitismmutualismcompetitionpredator-prey30sS7L4a
- Q7Consider this food web: Where is the largest amount of energy found in this food web?grasshawkgrasshoppermouse30sS7L4b
- Q8Which BEST explains the importance of nitrogen in the cycling of energy and matter?Nitrogen decreases the effectiveness of photosynthesis.Nitrogen decreases protein production in plants.Nitrogen increases protein production in plants.Nitrogen increases the effectiveness of photosynthesis.30sS7L4b
- Q9The two main processes by which plant cells absorb, release, and use energy arefermentation and respiration.digestion and photosynthesis.photosynthesis and respiration.aerobic and anaerobic respiration.30sS7L4b
- Q10Which two factors determine the biome in a terrestrial area?temperature and humidityhumidity and salt contentanimals and plantstemperature and salt content30sS7L4d
