Agricultural Science 2020 Jamb Examination

Government in agricultural production plays supportive and regulatory roles such as providing loans and credits to farmers, constructing storage facilities to reduce post-harvest losses, and establishing marketing outlets to ensure agricultural products reach consumers effectively. Labour provision, however, is primarily the responsibility of farmers, farm workers, and the private sector, not the government. Hence, labour provision is not considered a direct role of government in agriculture.

Agricultural extension aims at transferring relevant knowledge to farmers. For success, it must be research-based, involve the target community, and include extension specialists. However, if the programme is rigid and fails to adjust to new and contemporary technology, it becomes outdated and ineffective. Flexibility ensures the programme adapts to changes in farming methods, climate conditions, and innovations. Without this, its effectiveness diminishes significantly.

In agricultural economics, long-term investments such as land, machinery, and irrigation systems are classified as capital. They are assets that enhance production over time and are distinct from profit, savings, or entrepreneurship. Capital is fundamental to sustained agricultural productivity because it represents durable resources that support continuous output.

When selecting livestock, desirable qualities include feed consumption efficiency, productivity traits such as egg production, and desirable body weight. Mortality rate, however, is not a selection quality but an outcome that indicates poor management, disease, or weak genetic traits. Farmers aim to minimise mortality, not use it as a selection criterion.

Consumer sovereignty is the principle that consumer preferences dictate production decisions. Farmers respond to market demand by producing goods consumers are willing to buy. This means the consumer, not the farmer, ultimately determines what is produced, reflecting the idea that demand shapes supply in agricultural markets.

Agricultural loans are designed to finance productive activities such as purchasing seeds, livestock drugs, and hiring machinery for cultivation. Marketing, however, is usually considered a post-production activity and is not the intended direct use of agricultural loans. Loans primarily support production processes to ensure sustainable yields.

Agricultural extension agents are tasked with educating farmers on modern practices, including the use of improved seeds, fertilisers, and techniques that enhance production. Their main role is not to directly recruit or train school leavers or graduates into farming but to improve the efficiency and productivity of those already engaged in farming activities. By transferring knowledge and innovations, they help farmers adopt more effective agricultural practices.

Recognised cattle breeds in West Africa include Ndama, Sokoto Gudali, and White Fulani. Sokoto Red, however, refers to a goat breed commonly reared in northern Nigeria, not cattle. Therefore, it does not belong among cattle breeds, distinguishing it from the other listed options.

Diseases in fish ponds often arise from poor management practices such as overstocking, inadequate water quality, poor feeding, and lack of sanitation. Liming is beneficial because it improves water quality, while harvesting is a normal practice that does not cause disease. Mixed stocking, if properly managed, does not directly lead to diseases. The major cause is poor management practices.

Signs of approaching parturition in animals include vulva swelling, relaxation of the cervix, and enlargement of the mammary gland due to milk accumulation. A drop in milk production, however, is not a sign of approaching birth but rather a post-parturition or health-related issue. As parturition nears, milk production typically increases, preparing the animal for feeding its young.