JAMB Agricultural Science Past Questions & Answers - Page 5

The role of agricultural extension officers in the field of agriculture is primarily to deliver agricultural education and training to farmers. Agricultural extension officers work closely with farmers, providing them with information, knowledge, and technical expertise to improve their farming practices. They facilitate the transfer of scientific research and technology to farmers, helping them adopt modern and sustainable agricultural practices.

The Paleolithic Age, also known as the Stone Age, marked the beginning of agricultural practices by early human societies. During this period, which began around 2.6 million years ago and lasted until around 10,000 BCE, humans transitioned from being solely hunter-gatherers to engaging in early forms of agriculture.

Disseminating information to farmers involves utilizing various methods to reach them effectively. Social media campaigns, such as through platforms like Facebook, Twitter, and WhatsApp, have become increasingly popular for sharing agricultural knowledge, news, and updates. Radio broadcasts, especially in rural areas, serve as an important means of reaching farmers with relevant agricultural information.

The primary goal of crop improvement in agriculture is to enhance crop yield and quality. Crop improvement involves various techniques, such as plant breeding, genetic engineering, and selection of superior traits, to develop new varieties or cultivars with improved characteristics. These characteristics may include higher yields, improved nutritional content, resistance to pests and diseases, tolerance to environmental stresses, and better adaptation to specific growing conditions.

The primary function of the digestive system is the absorption of nutrients. The digestive system breaks down food into smaller molecules through processes such as mechanical digestion (chewing) and chemical digestion (enzymes breaking down food).