In which subdivision of aquatic ecosystem thermal stratification in seen ?

Related MCQs

• Give correct option for the given true and false statements (i) Some insects, birds and mammals living in warm and dry climate have more darker black pigments than the races of same species living in cold and humid climate. (ii) Tempreture variation is much lesser in aquatic habitat compared to terrestrial habitat (iii) In deep fresh water lakes, there is gradual incrase in tempreture from surface to the bottem (iv) In an aquatic habitat production increases with insing depth. (T =True, F = False)
• When organism of aquatic ecosystem is at equvalent trophee level in when cow is included ? (DUMET...2009)
• Which is world’s most problematic aquatic weed?
• Which chemicals increase growth of aquatic organism?
• In which of the following aquatic ecosystems habitat fluid (liquid) is very concetrated compared to body fluid ?
• The second largest aquatic vertebrate is (J & K CET-2008)
• 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) Water accumulation in potted plant (i) Chemical fertilizers (Q) Aquatic weed (ii) Mercury,DDT (R) Eutrophication (iii) Eichhornia (S) Nonbiodegradable (iv) Water logging
• Match the following : Coulmn-I Coulmn-II (A) Prophase-I (i) Chromosomes move toward one plane along with centromere. (B) Metaphase-II (ii) Half the number of chromosomes in seen (C) Anaphase-I (iii) Longest phase of meiosis-I (D) Telophase-I (iv) Two nuclei are seen
• Which option is correct for the given information ? (1) Ecosystem is an outcome of an interaction between all living components and non- living components of Environment. (2) GPP= NPP- loss due to respiration (3) Primary productivity is measured in dry biomass.