Compare and contrast the advantages and disadvantages of production of genetically modified crops.
Genetically Modified (GM) crops are plants whose genes have been altered by manipulation using recombinant DNA technology. They offer several advantages but also have some disadvantages.
Advantages of GM Crops:
GM crops have been highly beneficial in increasing crop yields and reducing post-harvest losses. They have made crops more tolerant to abiotic stresses such as cold, drought, salt, and heat. GM technology has created pest-resistant crops (like Bt cotton, Bt corn) which produce Bt toxin to provide resistance against insects, thereby reducing reliance on chemical pesticides. This decreases the harmful effects of chemicals on the environment.
GM crops have increased efficiency of mineral usage by plants, which prevents early exhaustion of soil fertility. They have also enhanced the nutritional value of food, for example, Golden Rice which is enriched with Vitamin A. Additionally, GM has created tailor-made plants that supply alternative resources to industries in the form of starches, fuels, and pharmaceuticals.
Disadvantages/Concerns of GM Crops:
Genetic modification of organisms can have unpredictable results when such organisms are introduced into the ecosystem. There are ethical issues regarding the manipulation of living organisms, requiring regulation to evaluate the morality of human activities that might help or harm living organisms.
There are also patent-related problems regarding the modification and usage of living organisms for public services. To address these concerns, the Indian Government has set up organisations like GEAC (Genetic Engineering Approval Committee) to make decisions regarding the validity of GM research and the safety of introducing GM organisms for public services.
Explanation
The question asks for a comparison of advantages and disadvantages of GM crops. The textbook context provides clear advantages: tolerance to abiotic stresses, reduced pesticide reliance, reduced post-harvest losses, increased mineral efficiency, enhanced nutritional value, and industrial applications. The disadvantages mentioned are: unpredictable ecological results, ethical concerns, and patent issues. The answer should be balanced, covering both aspects as required by the 5-mark format with proper structure and key terms highlighted.
Solution Steps
Step 1: Define GM crops using the textbook definition
Step 2: List all advantages from the context - abiotic stress tolerance, pest resistance, reduced post-harvest losses, mineral efficiency, enhanced nutrition, industrial applications
Step 3: List disadvantages/concerns - unpredictable ecosystem results, ethical issues, patent problems
Step 4: Mention regulatory body (GEAC) set up to address concerns
Step 5: Organize into 4-5 well-structured paragraphs with key terms in bold