Download Organisms that can make their own food using inorganic

1
Created by Boundless
Organisms that can make their own food using inorganic molecules are called
_____, while organisms that make their own food using light energy are called
_____.
A
chemoautotrophs; photoautotrophs
B
heterotrophs; chemoautotrophs
C
photoautotrophs; chemoautotrophs
D
heterotrophs; photoautotrophs
2
Created by Boundless
The rate at which photosynthetic primary producers incorporate solar energy is
referred to as ______, while the energy that remains in the primary producers
following respiration and heat loss is referred to as ______.
A
gross primary productivity; net primary productivity
B
photoautotrophy; chemoautotrophy
C
biomass; gross primary productivity
D
net primary productivity; gross primary productivity
3
Created by Boundless
Which of the following about the energy transfer between trophic levels is true?
A
Endotherms utilize energy more efficiently than ectotherms.
B
Energy can only be transferred once within a food chain.
C
There is an infinite number of energy transfers within a food
chain.
D
Ectotherms utilize energy more efficiently than endotherms.
4
Created by Boundless
Fill in the blank. Ecological/trophic pyramids are a good way to illustrate energy
needs in an ecosystem. This is because the energy is ______ as it passes from one
trophic level to the next.
A
lost
B
constant
C
gained and then lost
D
gained
5
Created by Boundless
The English Channel ecosystem has an inverted shape because the ______.
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A
primary producers have a low turnover rate
B
lack of productivity of primary producers
C
primary producers have a high turnover rate
D
primary consumers have a high turnover rate
Created by Boundless
Why do grasslands typically exhibit an upright pyramid shape during the summer?
A
There are more primary consumers than primary
producers.
B
There are more primary producers than primary
consumers.
C
The number of organisms increases at each trophic level.
D
Organisms at the top of the pyramid are subject to greater
predation.
7
Created by Boundless
Which of the following is a result of biomagnification?
A
organisms at the highest trophic levels accumulate the
greatest amount of toxic substances
B
all of these answers
C
toxic substances are brought through the ecosystem by
the apex consumers
D
organisms at the lowest trophic levels are unaffected by
toxic substances