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Chapter 3 Living Things
Test Description: Covers living things and their environment
Instructions: Answer all questions to get your test result.
1) An organism's habitat must provide all of the following except
A
water
B
predators
C
food
D
shelter
2) The nonliving parts of an ecosystem are called
A
organisms
B
biotic factors
C
populations
D
abiotic factors
3) A______ is all the members of one species living in a particular area
A
biosphere
B
population
C
community
D
ecosystem
4) A group of antelope leaving the herd in search of better grassland is an example of
A
decreasing birth rate
B
increasing birth rate
C
immigration
D
emigration
5) If you count 20 beetles in a garden measuring 5 square meters, the population density of the beetles is
A
100 beetles per square meter
B
4 beetles per square meter
C
20 beetles per square meter
D
5 beetles per square meter
6) All the following are examples of limiting factors except
A
space
B
food
C
rocks
D
weather conditions
7) which of the following is an example of a predator adaptation?
A
a porcupine's needles
B
a shark's powerful jaws
C
a frog's bright colors
D
a plant's poisonous chemicals
8) A hawk building a nest on an arm of a saguaro cactus is an example of
A
mutualism
B
commensalism
C
parasitism
D
predation
9) The part of an ecosystem where an organism lives and feeds is called the organism's what?
A
birth
B
habitat
C
ecosystem
D
abiotic
10) Nutrients in the soil are considered ________ factors.
A
abiotic
B
birth
C
space
D
ecosystem
11) All the biotic and abiotic factors in an area together make up an ________
A
birth
B
space
C
abiotic
D
ecosystem
12) The main way that populations increase in size is through the _______ of offspring.
A
birth
B
ecosystem
C
abiotic
D
space
13) A lack of places to build nests is an example of ______ as a limiting factor
A
abiotic
B
birth
C
ecosystem
D
space
14) An insect looks like a leaf, so it blends in with its surroundings and is hard for predators to see. This is an example of commensalism
A
True
B
False
15) Population size generally increases if the birth rate is greater than the death rate
A
False
B
True
16) Both species benefit in the type of symbiosis called mutualism
A
True
B
False
17) Bees and flowers are biotic factors in an ecosystem
A
False
B
True
18) An ecologist counts 75 cardinals in an area measuring 15 square kilometers. what is the population density of the cardinals?
A
15 per square kilometer
B
60 per square kilometer
C
5 per square kilometer
D
75 per square kilometer
*select an answer for all questions
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