Biomagnification occurs due to toxic chemical accumulated by an organism.
a.Cannot be metabolised b. Can be metabolised c. Cannot be excreted d. Can be excreted

Read the following statement (A) Biomagnification occurs because a toxic substance accumulated by an organism cannot be metabolismed or excreated and is thus passed on to the most higher trophic levels. (B) FOAM are responsible for the upkeep of the marshland developed in town of Arcala for integrated waste water treatment. (C) E.Coli indicates water pollution by faecal matter. Select the option for the set of all the correct statements.

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 cadmimu can cause thinning of egg shell in birds. (iv) DDT accumulation is a major cause of reduced population of fish eating birds. (v) Biomagnification occurs only in aquatic food chain.

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 cadmimu can cause thinning of egg shell in birds. (iv) DDT accumulation is a major cause of reduced population of fish eating birds. (v) Biomagnification occurs only in aquatic food chain.

Assertion: A few toxic substances often present in industrial water can undergo biological magnification. Reason: Toxic substances accumulated by an organism can not be metabolised or excreted.

An organic substance that can withstand environ mental extremes and cannot be degraded by any enzyme is

Which of the following option indicates the correct explanation for natural resources ? a.Sources can be created by man and utilized by man. b.Sources can be created by man and utilized by all organisms. c.Products obtained only from forests d.The naturally occurring, cannot be created by man and useful for all organisms.

An organic substance that can withstand environmental extremes and cannot be degraded by any enzyme is