About NCERT Exemplar Solutions for Class 12 Biology Chapter 9: Strategies for Enhancement in Food Production
The NCERT exemplar Solutions for Class 12 Biology Chapter 9 Strategies for Enhancement in Food Production emphasize methods to increase agricultural productivity to meet the growing food demands of the population. This chapter is crucial for students to understand modern agricultural practices, crop improvement techniques, and sustainable food production strategies. The chapter begins with plant breeding techniques, where students learn about hybridisation, selection methods, and the development of high-yielding varieties (HYVs). The exemplar solutions explain the significance of heterosis, polyploidy, and molecular tools in improving crop quality and productivity. Read the NCERT textbook and solve questions with the help of NCERT solutions for class 12 Biology.
A key focus is on animal husbandry, including selective breeding, crossbreeding, and management practices to enhance milk, meat, and egg production. The solutions guide students to understand the integration of nutrition, health care, and breeding strategies in livestock management. The chapter also covers fertilizers and manures, including their types, advantages, disadvantages, and environmental impacts. Students learn the importance of balanced nutrient supply and sustainable practices to prevent soil degradation. Pest and disease management is another important topic. The solutions discuss chemical, biological, and integrated pest management strategies to protect crops while minimizing environmental harm. Examples include the use of bio-control agents, resistant varieties, and crop rotation. The chapter concludes with modern biotechnological approaches like tissue culture, genetic engineering, and transgenic crops. The exemplar solutions provide detailed examples of Bt cotton, pest-resistant crops, and biofortified plants, linking molecular Biology with practical agriculture. By practicing these solutions, students strengthen their understanding of strategies to increase food production, the role of biotechnology, and sustainable agricultural practices. These solutions encourage problem-solving skills, enabling learners to apply theoretical knowledge to practical challenges in agriculture and food security.