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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
The flow of water through the food web.
B
The flow of energy through the food web.
C
Which organisms are autotrophs.
D
Which organisms eat each other.
2) The first trophic level consists of
A
primary consumers
B
secondary consumers
C
primary producers
D
primary energy source
3) The process of taking in sunlight, carbon dioxide and water and producing sugars and oxygen is called
A
chemosynthesis
B
photosynthesis
C
osmosis
D
diffusion
4) The process of taking in chemicals from the Earth's crust and producing food is called
A
fracking
B
photosynthesis
C
chemosynthesis
D
osmosis
5) When an organism accumulates a material in its body at a concentration greater than the environment.
A
photosynthesis
B
biomagnification
C
chemomagnification
D
bioaccumulation
6) The process of the concentration of a poison increasing as you move up the food web is known as
A
biomagnification
B
bioaccumulation
C
chemomagnification
D
diffusion
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
heat from the Earth's mantle
C
the sun
D
water
9) What forms the base of the food chain at hydrothermal vents?
A
magma
B
bacteria
C
tube worms
D
plants
10) An organism that makes its own food from the primary energy source.
A
Herbivore
B
All three are correct
C
Autotroph
D
Heterotroph
11) Which trophic level are secondary consumers?
A
3rd
B
4th
C
2nd
D
1st
12) What percent of energy is LOST as food moves through the food chain?
A
50%
B
25%
C
90%
D
10%
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
Energy doesn't move through a food chain
B
It stays the same
C
It increases
D
It decreases
15) What was the source of Minimata disease?
A
a virus
B
PCB's
C
DDT
D
Organic mercury
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
500 ppm
B
5,000 ppm
C
50 ppm
D
50,000 ppm
*select an answer for all questions
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