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Life Science Review
Test Description: Life Science Unit Review
Instructions: Answer all questions to get your test result.
1) An organism's habitat provides
A
water only
B
shelter and food only
C
food, water, and shelter
D
food and water only
2) Which of the following is a biotic factor?
A
deer
B
air
C
soil
D
water
3) Which of these is an example of a population
A
algae, snails, and fish in an aquarium
B
raccoons in a neighborhood
C
shells in a seashell collection
D
ticks and fleas on a dog
4) An environmental factor, such as food or space, that causes a population to stop growing or decrease in size
A
non-limiting factor
B
limiting factor
C
ecosystem factor
D
population factor
5) Which of the following is an example of a predator adaptation?
A
poisonous tentacles
B
mimicry
C
protective covering
D
false coloring
6) In parasitism, the organism that the parasite lives in or on is called what?
A
predator
B
consumer
C
host
D
resource
7) A close relationship between two species that benefits at least one of the species is called
A
adaptation
B
symbiosis
C
succession
D
competition
8) Rain forests, grasslands, deserts, and the tundra are all examples of
A
communities
B
organisms
C
populations
D
biomes
9) A prairie dog lives in a grassy habitat. Which of the prairie dog's need do the grasses meet?
A
water
B
food
C
protection from predators
D
oxygen
10) All of the biotic and abiotic factors that interact in a particular are make up a(n)
A
species
B
population
C
community
D
ecosystem
11) Which is an abiotic factor in an ecosystem?
A
bacteria
B
grass
C
soil
D
fungi
12) Which of the following is an example of a community?
A
pine cones in a forest
B
cats and dogs in a neighborhood
C
ticks, fleas, mites, and fungi on a dog
D
snails in an aquarium
13) The largest population an area can support
A
population density
B
immigration rate
C
emigration rate
D
carrying capacity
14) Which of the following might restrict the growth of a population
A
ample rainfall
B
mild winters
C
increased numbers of prey
D
increased predation
15) The struggle between organisms to survive in a habitat with limited resources is called
A
mutualism
B
commensalism
C
predation
D
competition
16) Which is an example of ciommensalism
A
remoras and sharks
B
impalas and oxpeckers
C
hummingbirds and flowers
D
acacia trees and stinging ants
17) The type of symbiotic relationship where both organisms benefit
A
competition
B
commensalism
C
predation
D
mutualism
18) The type of symbiotic relationship where one species benefits and the other is harmed
A
parasitism
B
competition
C
predator
D
mutualism
19) Which characteristic is shared by both parasites and predators?
A
they both attack a living food source
B
they both capture and kill animals
C
they both feed on decomposing plants
D
they both live inside their host
20) Which land biome is extremely cold and dry?
A
tundra
B
rainforest
C
mountains
D
grassland
*select an answer for all questions
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