Tag: biomagnification
Questions Related to biomagnification
The range of biomagnification of DDT in an aquatic food chain, if starting from 0.003 ppb level in water may go at fish-eating bird level upto:
Which among the following is likely to have the highest levels of DDT deposition in its body?
DDT residues are rapidly passed through food chain causing biomagnification because DDT is
Which of the following causes bio-magnification?
Which of the following statements is not correct regarding biomagnification?
(i) Mercury accumulated by an organism cannot be metabolised.
(ii) In the process of biomagnification, concentration of DDT is increased at successive trophic levels.
(iii) Accumulation of cadmium can cause thinning of eggshells in birds.
(iv) DDT accumulation is a major cause of a reduced population of fish-eating birds.
(v) Biomagnification occurs only in the aquatic food chain
The biological amplification of DDT in the various trophic levels is known as.
Increase in concentration of a toxicant at successive trophic levels is called _________.
Which one of the following organism is likely to show the highest concentration of DDT once it has been introduced into the ecosystem?
In a lake polluted with pesticides, which one of the following will contain the maximum amount of pesticide.
When the rate of the consumption of organic matter of the effluent by floes increases, then the BOD of the effluent.