Questão 1
Questão
An ecosystem is made up of......
Responda
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a group of living things and their physical surroundings; different communities
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individual organisms; only living things
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groups of the same species; populations
Questão 2
Questão
[blank_start]Photosynthesis[blank_end] happens when a plant uses the Sun's energy to convert water and carbon dioxide into carbohydrates such as sugars and starches.
Responda
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Photosynthesis
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Sunlight
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Producers
Questão 3
Questão
What do decomposers do? (click all that apply)
Responda
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Consume waste and dead organisms to get energy
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Return nutrients to the soil, water, or air.
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Break down material from waste and dead organisms.
Questão 4
Questão
No energy is lost in an ecosystem.
Questão 5
Questão
Nutrients are continuously lost through the food web.
Questão 6
Questão
Which of the following are nutrients in an ecosystem? (check all that apply)
Responda
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water, carbon, oxygen
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nitrogen, calcium,
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producers, consumers
Questão 7
Questão
Producers take in [blank_start]carbon dioxide[blank_end] during the process of photosynthesis and release [blank_start]oxygen[blank_end].
Responda
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carbon dioxide
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oxygen
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oxygen
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carbon dioxide
Questão 8
Questão
[blank_start]Consumers[blank_end] take in oxygen for their life processes and release carbon dioxide.
Questão 9
Questão
A [blank_start]producer[blank_end] is a type of organism that undergoes photosynthesis, converting energy into a usable form of food for other organisms in an ecosystem.
Questão 10
Questão
What form of energy is lost by moving from producer to consumer to decomposer in an ecosystem?
Questão 11
Questão
A [blank_start]producer[blank_end] is a living thing that can make its own food.
Questão 12
Questão
A [blank_start]consumer[blank_end] is a living thing that eats other living things for food and energy.
Questão 13
Questão
How is a food web different from a food chain?
Responda
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Food webs are a group of overlapping food chains in an ecosystem.
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Food webs include at least one spider as a primary food source.
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Food chains are more complex than food webs.
Questão 14
Questão
In a food web or food chain, carnivores are the most plentiful (numerous) member of the ecosystem.
Questão 15
Questão
What is an energy diagram?
Responda
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A diagram that shows how energy moves from one feeding level to the next in the food chain.
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Alternate forms of energy available to animals in an ecosystem.
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A diagram which shows how each member of an ecosystem gets its food.
Questão 16
Questão
Which of the following is true about an energy pyramid? (check all that apply)
Responda
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There are more producers than herbivores or carnivores in the ecosystem.
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As you move up to the top of the pyramid from producer to consumer, the diagram becomes smaller and smaller to show how less and less energy is available.
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Energy drops about 10% from each level of the pyramid.
Questão 17
Questão
[blank_start]Symbiosis[blank_end] is an interaction where two species live together for a long time and at least one of the species benefits.
Responda
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Symbiosis
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Competition
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Predator-Prey
Questão 18
Questão
[blank_start]Competition[blank_end] happens when two or more species depend on the same food source or any limited resource.
Questão 19
Questão
In symbiosis, both organisms must benefit from an interaction.
Questão 20
Questão
Predator-Prey relationships are bad because a cute animal gets killed.
Questão 21
Questão
A [blank_start]population[blank_end] is a group of individuals of the same species living in a given area.
Responda
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population
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biosphere
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ecosystem
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community
Questão 22
Questão
The change in size of population over time is called its [blank_start]growth rate[blank_end].
Questão 23
Questão
What limits population growth? (check all that apply)
Responda
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The amount of food available.
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The amount of space available.
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Competition from different species for food.
Questão 24
Questão
What is a pollutant?
Questão 25
Questão
What often determines how harmful a pollutant is? (check all that apply)
Responda
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The pollutant's ability to cause harm.
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The amount of pollutant in the air, water, or soil.
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How long the pollutant stays in the air, water, or soil.
Questão 26
Questão
Why are toxins heavily concentrated at higher predator levels in the food chain?
Responda
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Because toxins are stored in the fatty tissues of animals and are not passed out of their body. This multiplies as one moves higher up the food chain.
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Because higher level predators like the taste of toxins.
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Because only top carnivores store toxins in their body.
Questão 27
Questão
What are some examples of pollutants?