EVERYDAY SCIENCE

SCIENCE

ECOLOGY

Question [CLICK ON ANY CHOICE TO KNOW THE RIGHT ANSWER]
What is bioaccumulation?
A
Build-up of a toxin in an individual organism
B
Increase in concentration of a toxin at higher trophic levels
C
Build-up of mass in lower trophic levels
D
Decrease in concentration of a toxin at higher trophic levels
Explanation: 

Detailed explanation-1: -Bioaccumulation is the process by which toxins enter the food web by building up in individual organisms, while biomagnification is the process by which toxins are passed from one trophic level to the next (and thereby increase in concentration) within a food web.

Detailed explanation-2: -Bioaccumulation occurs when toxins build up-or accumulate-in a food chain. The animals at the top of the food chain are affected most severely. This is what happens: Small amounts of toxic substances-often pesticides or pollution from human activity-are absorbed by plants.

Detailed explanation-3: -An example of bioaccumulation is that of car emission chemicals building up in birds and other animals, mercury building up in fish. Bioaccumulation is the gradual accumulation of substances, such as pesticides or other chemicals, in an organism.

Detailed explanation-4: -The term bioaccumulation is short for biological accumulation.

Detailed explanation-5: -Bioaccumulation means an increase in the concentration of a chemical in a biological organism over time, compared to the chemical’s concentration in the environment. Compounds accumulate in living things any time they are taken up and stored faster than they are broken down (metabolized) or excreted.

There is 1 question to complete.