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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
1
B
10
C
100
D
25
2) In a food pyramid, the producers are at the
A
top and bottom
B
top
C
middle
D
bottom
3) It is so important for human beings to eat ____________ and ___________ to receive energy.
A
fruits and vegetables
B
meat and eggs
C
dairy and eggs
D
fats and oils
4) Carnivores that eat the herbivores are called
A
scavengers
B
herbivores
C
primary consumers
D
secondary consumers
5) Primary consumers are also called
A
decomposers
B
scavengers
C
herbivores
D
carnivores
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
consumers
C
scavengers
D
decomposers
7) Animals that eat other animals are called
A
decomposers
B
carnivores
C
producers
D
primary consumers
8) Carnivores that eat other carnivores are called
A
producers
B
decomposers
C
secondary consumers
D
primary consumers
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
600
B
1,400
C
500
D
1,600
10) Animals and people who eat both animals and plants are called
A
herbiviores
B
vegetarians
C
carnivores
D
omnivores
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
false
B
true
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
false
B
true
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
all the animals have died
B
the population is getting larger
C
animals are running into one another
D
the population is dropping
18) which of these are NOT reasons that people think shark populations are declining?
A
tuna fishing
B
attacks by killer whales
C
seal populations decreasing
D
people hunting them for thier fins
19) an environmental factor that prevents a population from growing is called a
A
reducing factor
B
environmental control
C
limiting factor
D
carrying capacity
*select an answer for all questions
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