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Ecology Review
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1 Name the levels of organization within the environment from most specific to most general (omit “species”)
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Answer Individual, population, community, ecosystem, biome, biosphere
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2 Define community
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Answer Collections of populations living together in the same area
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3 Define biosphere
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Answer The layer of living things and the space they inhabit that circle the globe
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4 To which trophic level would an oak tree belong?
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Answer The first trophic level-primary producers
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5 What is another word for consumer?
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Answer heterotroph
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6 Use 2 vocab words to describe the plants in an ecosystem
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Answer Producer, autotroph
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7 Which trophic level will have the highest amount of toxin in its body tissues?
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Answer Top level
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8 A plant contains 5000 units of energy.
A grasshopper eats the plant, a frog eats the grasshopper, a snake eats the frog, and a hawk eats the snake. How much of the plant’s energy was transferred to the hawk?
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Answer 0.5 units
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9 Why does only 10% of an organism’s energy pass to the next trophic level?
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Answer Poop, respiration, the organism uses the energy
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10 The number of individuals in a given area is called:
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Answer Population density
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11 Global warming is a density ____ factor
Disease is a density ____ factor
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Answer Independent Dependent
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12 What kind of relationship?
A soybean plant and nitrogen fixing bacteria
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Answer Mutualism
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13 What kind of relationship? Cheetah and a gazelle
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Answer Predation
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14 What kind of relationship?
Two trees growing next to each other in a forest
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Answer Competition
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15 What kind of relationship?
One organism is benefiting while the other isn’t affected
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Answer Commensalism
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16 Draw a logistic growth curve
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Answer
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17 What is the maximum number of individuals an ecosystem can sustain?
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Answer Carrying capacity
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18 A volcano erupts and lava flows over a piece of land. What would happen over the next several hundred years in that area?
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Answer Primary succession
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19 List 2 things that could cause secondary succession to begin in an area
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Answer Forest fire, over grazing, avalanche, landslide, ash volcano, natural disaster
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20 What is a pioneer species?
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Answer The first organisms to live in an area after a natural disaster
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21 What type of growth is occurring at point B?
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Answer Exponential
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22 Why did the deer population grow so drastically from ?
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Answer Decrease in predators, increase in resources
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23 Name a tertiary consumer in this food web.
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Answer Hawk
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24 Name 2 things that would happen if frogs died off
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Answer Less snakes, more dragonflies, more mayflies
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25 True/False. The hawk is BOTH a secondary AND tertiary consumer.
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Answer TRUE
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26 What TWO important things are missing in this food web?
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Answer Sun and decomposers/detritivores
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26 Name one thing that is biotic.
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Answer Anything that is living
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OTHER THINGS TO KNOW Biomes Cycles of Matter Population Graphs Predator-Prey
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