A. Algae
B. Bacteria
C. Higher plants
D. Man
Related Mcqs:
- The term ‘Bio-magnification’ refers to the:
A. Growth of organism due to food consumption
B. Increase in population size
C. Blowing up of environmental issues by man
D. Increase in the concentration of non-degradable pollutants as they pass through food chain
E. Decrease in population size - The use DDT is banned now a days because it is:
A. Very costly
B. Not available
C. Inflammable
D. Not degraded easily - Spraying of DDT on crops produces pollution of
A. Soil and water
B. Air and soil
C. Crops and air
D. Air and water - The major drawback of DDT as a pesticide is that:
A. Its cost of production is high
B. It is not rapidly degraded in nature
C. Organisms at once developed resistance to it
D. It is significantly less effective than other pesticides - When DDT was applied in an orchard as a pesticide, the fruit production decreased. This happened because:
A. DDT is a growth retardant
B. DDT disturbed hormonal balance essential for fruit setting
C. DDT killed the pollinating insects along with the pests
D. DDT inhibited flowering - DDT is a:
A. Biodegradable pollutant
B. Green house gas
C. Non-degradable pollutant
D. None of the above - Spraying of DDT on crop produces pollution of:
A. Air only
B. Air and soil only
C. Air, soil and water
D. Air and water only - Which of the following is likely to have the highest level of DDT deposition in its body?
A. Eel
B. Crab
C. Sea gull
D. Phytoplanktons - The ration of food energy assimilated to the food energy ingested is called:
A. Trophic level efficiency
B. Photosynthetic efficiency
C. Net production efficiency
D. Assimilation efficiency - Mr. X is eating curd/yoghurt. For this food intake in a food chain he should be considered as occupying:
A. First trophic level
B. Second trophic level
C. Third trophic level
D. Fourth trophic level
The correct answer to the question: "The maximum biological magnification of DDT through food web is seen in:" is "Man".
