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