NEET Biology question

Biology Biotechnology and Its Applications NEET

Thinking-type: A farmer wants to reduce the use of chemical pesticides on his cotton crop infested with bollworms while also improving soil nitrogen. Which combination of approaches would best achieve both goals?

(A)Planting Bt cotton and using Rhizobium/Azotobacter-based biofertilisersCorrect
(B)Using only chemical pesticides and chemical fertilisers
(C)Using only baculovirus sprays with no change in fertiliser practice
(D)Avoiding all microbial inputs entirely

Answer: (A)

Solution

Bt cotton (expressing the cry gene) controls bollworms without chemical pesticides, while nitrogen-fixing biofertilisers like

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Question ID VK-124775