Biomagnification

Which organism in the food web shown to the right would

contain the lowest concentration of chemical pollutants?

• producers

• primary consumers

• secondary consumers

• tertiary consumers

Tags

NGSS.MS-LS2-3

The phenomenon by which toxins concentrate in the organisms at higher trophic levels within an ecosystem is known as...

• Biotoxicity

• Biomagnification

• Eutrophication

• Predation

Tags

NGSS.MS-LS2-3

Consider the following food chain:

Algae > Mayfly > Minnow > Trout

In a polluted ecosystem, which organism would likely have the HIGHEST level of toxic chemicals in its body?

• Algae

• Mayfly

• Minnow

• Trout

Tags

NGSS.MS-LS2-4

When you consume an organism, you only receive 10% of the energy, but how much of the toxins do you receive?

• All of the toxins

• 10% toxins

• 1% toxins

• None of the toxins

Tags

NGSS.MS-LS2-3

In what year were the most toxins present in smallmouth bass?

• 2000

• 2002

• 2004

• 2005

Tags

NGSS.MS-LS2-1

Toxin concentrations _____________ as you go up the food chain.

• do not change

• increase

• decrease

Tags

NGSS.MS-LS2-3

Which organism in the food web would

contain the highest concentration of chemical pollutants?

• producers

• primary consumers

• secondary consumers

• tertiary consumers

Tags

NGSS.MS-LS2-3

Identify the process shown in this diagram.

• Extinction
• Toxin Accumulation
• Pollution
• Biomagnification

Tags

NGSS.MS-LS2-3

Which organism in this diagram has the highest DDT concentration?

• Zooplanktons
• small fish
• large fish
• Fish-eating birds

Tags

NGSS.MS-LS2-1

NGSS.MS-LS2-3

Chemical pesticides tend to be used in terrestrial ecosystems, but they are commonly found in the tissues of aquatic organisms. Because of this, birds and other animals with a diet high in fish commonly suffer the effects of biological magnification. How do these pesticides end up in these aquatic ecosystems?

• Pesticides evaporate and are delivered to water sources by rainfall

• Land animals containing pollutants die and decompose in waterways

• Pesticides are carried to water sources by freshwater runoff.

Tags

NGSS.MS-LS2-3

NGSS.MS-LS2-4