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NEET UG BIOLOGY MCQ: ENVIRONMENTAL ISSUES
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Consider the following statements about Ramesh Chandra Dagar’s work in the field of organic farming
I. Ramesh Chandra Dagar’s work includes bee-keeping, dairy management, water harvesting, composting and agriculture in a chain of processes
II. In this process there is no need to use chemical fertilisers for crops as cattle excreta is used as manure
III. Crop waste is used for making compost which is used as natural fertilizer
IV. Compost generates natural gas which is used for energy needs of farm
Which of the statements given above are correct?
I. Ramesh Chandra Dagar’s work includes bee-keeping, dairy management, water harvesting, composting and agriculture in a chain of processes
II. In this process there is no need to use chemical fertilisers for crops as cattle excreta is used as manure
III. Crop waste is used for making compost which is used as natural fertilizer
IV. Compost generates natural gas which is used for energy needs of farm
Which of the statements given above are correct?
View answer and explanation
Correct option: D
I, II, III and IV
Option D (I, II, III and IV) is correct because all the statements accurately describe Ramesh Chandra Dagar's holistic approach to organic farming.
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(i) Lost of urea and phosphate fertilizer were used in the crops in the vicinity
(ii) The area was sprayed with DDT by an aircraft
(iii) The lake water turned green and stinky
(iv) Phytoplankton populations in the lake declined initially thereby greatly reducing photosynthesis. Which of the following is not used for disinfection of drinking water? World most problematic aquatic weed is