Question

The maximum biomagnification would be in which of the following in case of aquatic ecosystem?

Answer 1

The organism at the highest trophic level will have maximum bio magnification.

Answer 2

Answer:fishes

Explanation:

Pesticides sprayed over crops also pass into water bodies due to surface run-off. In excess they cause immediate and mass scale deaths of aquatic animals. Persistant pesticides (e.g. organochlorine or chlorinated hydrocarbons like DDT) pass into food chain and increase in amount per unit weight of organisms with the rise in trophic level due to their accumulation in fat. The phenomenon is called biomagnification, e.g. 0.01-0.05 parts per billion in water, 25 parts per billion or 0.025 ppm in phytoplankton, 0.123 ppm in zooplankton, 1.04 ppm in clams and small fish