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Populations & Ecosystems (Pretest) Flashcards | StudBud
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Populations & Ecosystems (Pretest)
Populations & Ecosystems (Pretest)
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populations & ecosystems
Flashcards
20 cards
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Practice quiz
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Questions
20
Answers
1
In an ecosystem, the term abiotic factor is used to describe
anything that is living
anything that has once been alive
anything that is alive, was alive, or part of a living thing
anything that is non-living
2
Describe a negative consequence of human population growth.
setting up conservation areas to protect wildlife
passing laws to restrict development in certain areas
cleaning pollutants from rivers and lakes
cutting down forests & clearing land for construction
3
Which of the following would be considered adaptations for a butterfly?
spots on the wings that resemble eyes
using a proboscis to drink nectar from the flowers of plants
bright colorful markings that help it attract a mate
patterns on wings allowing them to blend in with backgrounds
4
Give two examples of limiting factors on ecosystems.
a tornado and migration
a flood and predation
a forest fire and competition
a forest fire and disease
5
The broad, flat leaves of a plant that are used to capture more sunlight are an example of a
all of these
not an adaptation
structural adaption
behavioral adaptation
6
What diagram is made to show all the feeding relationships that exist within an ecosystem?
a food web
an energy pyramid
a food pyramid
a food chain
7
What is a predator?
an organism that hunts and eats another organism for food
an organism that eats both plants and animals
organism working with another organism so they both benifit
an organism that is hunted by another organism
8
Why are predators so important to prey species populations?
they help limit the population size of prey species
they compete with each other for food and water
all of the above
they make humans more aware of prey species
9
What is the scientific definition for the term consumer?
an organism that finds and eats its food
an organism that breaks down dead decaying material
an organism that eats dead, decaying matter
an organism that makes its own food
10
Define the term niche.
when one organism benifits but the other is harmed
how an organism moves from one ecosystem to another
two groups of organisms fighting over resources
the role (job) of the organism in an ecosystem
11
What diagram is used to show that energy flows through an ecosystem?
an energy pyramid
a food chain
a food web
a food pyramid
12
What makes the size of a population increase or decrease?
the number of mates available in the ecosystem
the number of predators in the ecosystem
all of these can affect the size of a population
how much food is available & how much competition there is
13
Which grouping could be considered a population in the Kalahari Desert?
all the living and nonliving parts of the desert
all of the plants and animals in the desert
all the meercats in the desert
all of the sand and rocks in the desert
14
What is the scientific definition for the term competition?
size of a population compared to the amount of space
struggle in a community for the same resources, like food
when a population has abundant resources & ideal conditions
a group of people running a race to see who is faster
15
What is the scientific definition of the term producer?
an organism that breaks down dead decaying material
an organism that eats dead, decaying matter
an organism that makes its own food
an organism that finds and eats its food
16
Explain what a limiting factor is
the size of the population compared to the amount of space
anything that restricts the size of a population
largest # of individuals of 1 species in an environment
all the populations of different species in an area
17
In an ecosystem, the term biotic factor is used to describe
anything that has once been alive
anything that is non-living
anything that is alive, was alive, or part of a living thing
anything that is living
18
How might forest fires impact an ecosystem destroyed by the fires?
there will be an increase in competition between organisms
all of the above are true about the impact of forest fires
decreased biodiversity will impact the ecosystems recovery
rainwater will pick up more sediment and erode the ground
19
What is a prey species?
a species that hunts and eats other species for food
species working with another species so they both benifit
an organism that eats both plants and animals
a species that is hunted & eaten as food by another species
20
How can migration affect ecosystems?
migrating organisms might have no effects on the ecosystem
migrating organisms could become prey in the new ecosystem
all of these are true concerning migration
migrating organisms could experience rapid population growth
