Question

The diagram represents a food pyramid. The concentration of the pesticide DDT in individual
organisms at level D is higher than the concentration in individuals at level A because DDT is
A. produced by organisms at level C ingested by
those in level D.
B. passed through levels A, B, and C to organisms
at level D.
C. excreted by organisms at level A as a toxic
waste.
D. synthesized by organisms at level D.

Answer 1

Answer:

B. passed through levels A, B, and C to organisms

Explanation:

DDT is an insecticide that passed through the food chain from one trophic level to the next.

The concentration of DDT increases with the each trophic level in food chain and the amount of toxin increases as passes from A to B, B to C, and C to D where D has the higher concentration of DDT as it is the higher trophic level than A, B, and C.

Hence, the correct answer is "B. passed through levels A, B, and C to organisms".