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NEET UG BIOLOGY MCQ: ENVIRONMENTAL ISSUES
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Understanding
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DDT causes egg shell thinning in birds because it inhibits
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Correct option: B
Calcium ATPase
Option B (Calcium ATPase) is correct because DDT inhibits Calcium ATPase, which is crucial for calcium transport needed for eggshell formation.
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A lake near a village suffered heavy mortality of fishes with in a few days. Consider the following reasons for this.
(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
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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