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6th Grade- Energy In Ecosystems
Test Description: Ecology unit
Instructions: Answer all questions to get your test result.
1) only about _____percent of the energy contained in a trophic level is transferred between levels
A
10
B
100
C
1
D
25
2) In a food pyramid, the producers are at the
A
middle
B
bottom
C
top
D
top and bottom
3) It is so important for human beings to eat ____________ and ___________ to receive energy.
A
meat and eggs
B
dairy and eggs
C
fruits and vegetables
D
fats and oils
4) Carnivores that eat the herbivores are called
A
primary consumers
B
herbivores
C
scavengers
D
secondary consumers
5) Primary consumers are also called
A
carnivores
B
herbivores
C
scavengers
D
decomposers
6) Plants are called _________ because they are able to use light energy from the sun to produce food from carbon dioxide and water
A
producers
B
scavengers
C
consumers
D
decomposers
7) Animals that eat other animals are called
A
decomposers
B
carnivores
C
primary consumers
D
producers
8) Carnivores that eat other carnivores are called
A
producers
B
primary consumers
C
secondary consumers
D
decomposers
9) species of hummingbirds had a birth rate of 1000 over the course of a year and a death rate of 400 over the course of a year, the growth rate of hummingbirds for that specific population and time period would be
A
500
B
1,600
C
1,400
D
600
10) Animals and people who eat both animals and plants are called
A
vegetarians
B
carnivores
C
omnivores
D
herbiviores
11) If the number of births is consistently larger than the number of deaths, the population will increase over time
A
false
B
true
12) When there are more lions, the giraffe population will increase
A
true
B
false
13) Interconnected food chains form a food web
A
false
B
true
14) Most animals are only part of one food chain and eat one kind of food in order to meet their food and energy requirements
A
true
B
false
15) Populations can continue growing forever
A
true
B
false
16) Less food means fewer organisms can feed, which in turn will lead to
A
fewer organisms
B
more organisms
C
the same number of organisms
17) a population crash means
A
the population is dropping
B
animals are running into one another
C
the population is getting larger
D
all the animals have died
18) which of these are NOT reasons that people think shark populations are declining?
A
people hunting them for thier fins
B
tuna fishing
C
seal populations decreasing
D
attacks by killer whales
19) an environmental factor that prevents a population from growing is called a
A
carrying capacity
B
limiting factor
C
environmental control
D
reducing factor
*select an answer for all questions
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