The death of fishes due to Eutrophication is because of

Related MCQs

• What is true for the following statements ? Statement X : Marine fishes have chlorine secretory cells. while riverine fishes have chlorine cells. Statement Y : Compared to marine water, fluid present in fish is hypotonic while reverine water is hypertonic compared to fluid present in fish. X Y X Y
• Which Source of eutrophication is the modern source of phosphorus ?
• Arrange the following statements with reference to accelerated eutrophication in proper manner. (p)Silt and debris pile up at the bottom of the lake (q)Marsh plants take roots in the shallows begin to fill the lake basin (r)Introduction of large number of nitrogen and phosphate in the pond (s)Encouragement of growth of aquatic organisms.
• Match the items given in column I and II Column-1 Column-II (P) Global warming (i) Mercury,DDT (Q) Eutrophication (ii) Rise in sea level (R) Biological magnification (iii) CH4,CO2 (S) Green house effect (iv) Algal bloom
• Match the items given in column I and II Column-1 Column-II (P) Water accumulation in potted plant (i) Chemical fertilizers (Q) Aquatic weed (ii) Mercury,DDT (R) Eutrophication (iii) Eichhornia (S) Nonbiodegradable (iv) Water logging
• Edible marine fishes are
• Which group is for common fresh water fishes.
• Marine teleost fishes excrete
• Assertion (A) Death is a meaningful event. Reason (R) The number of living individuals of each species remains limited through death and components of body further turn to environment
• In a population of frog ‘J’ type of population growth curve is seen than which information from the given graph can be true for “ point A” (i) Vital Index < 100 (ii) Birth rate < death rate (iii) Birht rate > death rate