Genetic modification has led to which of the following outcomes? Which of the statements given below are correct?
I. Genetic modification has decreased the dependence on chemical pesticides.
II. Genetic modification has minimised post-harvest losses.
III. Genetic modification has improved the plants’ efficiency in utilising minerals.
IV. Genetic modification has increased the nutritional value of the food.
Answer & explanation
Correct answer: option 4
The correct answer is Option (4) → I, II, III and IV
True. I. Genetic modification has decreased the dependence on chemical pesticides. Pest-resistant crops such as Bt cotton make their own toxin, so less pesticide is needed.
True. II. Genetic modification has minimised post-harvest losses. GM crops have helped reduce the losses that occur after the crop is harvested.
True. III. Genetic modification has improved the plants’ efficiency in utilising minerals. GM plants use minerals better, which prevents early exhaustion of soil fertility.
True. IV. Genetic modification has increased the nutritional value of the food. Golden rice, a Vitamin A enriched rice, is the book’s example.
All four statements are correct.
NCERT Extract:
Biotechnological Applications in Agriculture – “… GM plants have been useful in many ways. Genetic modification has: (i) made crops more tolerant to abiotic stresses (cold, drought, salt, heat). (ii) reduced reliance on chemical pesticides (pest-resistant crops). (iii) helped to reduce post harvest losses. (iv) increased efficiency of mineral usage by plants (this prevents early exhaustion of fertility of soil). (v) enhanced nutritional value of food, e.g., golden rice, i.e., Vitamin ‘A’ enriched rice.”