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biology test ch.15

Chapter 15 biology test

QuestionAnswer
How could a predator increase the population size of another species in its habitat? By killings its competitors
What would happen to the transfer of energy and the recycling of nutrients if decomposers were removed from the cycle? The inorganic nutrients wouldn’t be available to plants
An herbicide(weed killer) was sprayed in a yard to kill the weeds, but also killed some grasses and flowers. How would the change in these small producers most likely affect the yard's ecosystem? Decrease in biodiversity threatens the overall health of the ecosystem
What would most likely happen to a population of deer if pollution kills vegetation? The population will decrease without vegetation
What would most likely decrease the carrying capacity of grasshoppers in an ecosystem with this food chain? increase in snakes
Describe a result of an increase in the snake population less grasshoppers
A disease drastically reduced the population of toads. Soon, the mice population, also declines. What could be the reason? Snakes started eating mice more
What would happen if the predaceous insect population significallly decreased? Toads, herb insects, and birds would also decrease because snakes would target them more.
What letter represents a producer a b c d D
How many acorns must be produced to support 2,000 squirrels in this ecosystem? 20,000
How mnay snakes are represented by the 2? 200
True or False? 10% of the energy from acorns are transferred to squirrels? True
Energy and biomass both decrease in each trophic level? True or False? True
The apex predator represents the most biomass? True or False False
Name a top consumer: Hawks and owls
What organsims has the greatest amount of energy? Plants producer
What would incease the carrying capacity of rabbits? less foxes,hawks,owls
Created by: MaggieMae09
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