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Food Webs And Biomagnification
Test Description: Food Webs and Biomagnification
Instructions: Answer all questions to get your test result.
1) What do the arrows in a food web represent?
A
Which organisms are autotrophs.
B
The flow of energy through the food web.
C
Which organisms eat each other.
D
The flow of water through the food web.
2) The first trophic level consists of
A
primary consumers
B
primary producers
C
primary energy source
D
secondary consumers
3) The process of taking in sunlight, carbon dioxide and water and producing sugars and oxygen is called
A
osmosis
B
diffusion
C
chemosynthesis
D
photosynthesis
4) The process of taking in chemicals from the Earth's crust and producing food is called
A
chemosynthesis
B
osmosis
C
fracking
D
photosynthesis
5) When an organism accumulates a material in its body at a concentration greater than the environment.
A
chemomagnification
B
photosynthesis
C
bioaccumulation
D
biomagnification
6) The process of the concentration of a poison increasing as you move up the food web is known as
A
diffusion
B
chemomagnification
C
bioaccumulation
D
biomagnification
7) Which below is an example of an interaction between an aquatic and terrestrial food web.
A
An eagle eats a mouse
B
A human eats a carrot
C
A shark eats a stingray
D
A bear eats a fish
8) What is the primary energy source for all living things on the surface of the Earth?
A
plants
B
the sun
C
water
D
heat from the Earth's mantle
9) What forms the base of the food chain at hydrothermal vents?
A
plants
B
tube worms
C
magma
D
bacteria
10) An organism that makes its own food from the primary energy source.
A
Herbivore
B
Heterotroph
C
Autotroph
D
All three are correct
11) Which trophic level are secondary consumers?
A
3rd
B
1st
C
2nd
D
4th
12) What percent of energy is LOST as food moves through the food chain?
A
90%
B
50%
C
10%
D
25%
13) Organisms which do not make their own food.
A
Autotroph
B
Primary Producters
C
Heterotroph
D
Plants
14) What happens as energy moves through a food chain?
A
It increases
B
It stays the same
C
Energy doesn't move through a food chain
D
It decreases
15) What was the source of Minimata disease?
A
DDT
B
Organic mercury
C
a virus
D
PCB's
16) If a poison is introduced in the primary producers at a concentration of 5 ppm, and increased as a rate of 10x for each trophic level, what would be the concentration in a tertiary consumer?
A
5,000 ppm
B
50,000 ppm
C
500 ppm
D
50 ppm
*select an answer for all questions
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