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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 eat each other.
B
The flow of water through the food web.
C
The flow of energy through the food web.
D
Which organisms are autotrophs.
2) The first trophic level consists of
A
primary energy source
B
primary consumers
C
secondary consumers
D
primary producers
3) The process of taking in sunlight, carbon dioxide and water and producing sugars and oxygen is called
A
osmosis
B
chemosynthesis
C
diffusion
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
bioaccumulation
B
biomagnification
C
photosynthesis
D
chemomagnification
6) The process of the concentration of a poison increasing as you move up the food web is known as
A
chemomagnification
B
diffusion
C
bioaccumulation
D
biomagnification
7) Which below is an example of an interaction between an aquatic and terrestrial food web.
A
A bear eats a fish
B
A human eats a carrot
C
A shark eats a stingray
D
An eagle eats a mouse
8) What is the primary energy source for all living things on the surface of the Earth?
A
the sun
B
water
C
plants
D
heat from the Earth's mantle
9) What forms the base of the food chain at hydrothermal vents?
A
tube worms
B
plants
C
bacteria
D
magma
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
2nd
B
3rd
C
1st
D
4th
12) What percent of energy is LOST as food moves through the food chain?
A
50%
B
90%
C
10%
D
25%
13) Organisms which do not make their own food.
A
Autotroph
B
Heterotroph
C
Primary Producters
D
Plants
14) What happens as energy moves through a food chain?
A
It stays the same
B
It decreases
C
It increases
D
Energy doesn't move through a food chain
15) What was the source of Minimata disease?
A
Organic mercury
B
PCB's
C
DDT
D
a virus
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
50 ppm
B
50,000 ppm
C
5,000 ppm
D
500 ppm
*select an answer for all questions
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