Paper 1 · People, Development and Environment
Statement I: Bioaccumulation takes place in a single organism over the span of its life, resulting in a higher concentration in older individuals. Statement II: Biomagnification takes place as chemicals transfer from lower to higher trophic levels within a food web, resulting in a higher concentration at higher levels. Which of the above statements are true?
- Bioaccumulation takes place within a single organism over its life, giving a higher concentration in older individuals
- Biomagnification takes place as chemicals move up trophic levels, giving a higher concentration at higher levels
AStatements 1 and 2 are true ✓ Correct
BOnly statement 1 is true
COnly statement 2 is true
DBoth statements are false
Correct answer: (A) Statements 1 and 2 are true — Both statements are true, so that is the answer.
Explanation
★Both statements are true, so that is the answer.
★Bioaccumulation builds up a chemical within one organism over its life.
★So statement one is true.
★Biomagnification builds up chemicals as they pass up the trophic levels of a food web.
★So statement two is also true.
★Since both hold, both statements are true.
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