WAEC Agricultural Science Past Questions & Answers - Page 5

Fish farming can be combined with vegetable production and poultry production for mutual benefits. The waste from the fish can be used as fertilizer for the vegetables, and the vegetables can help filter the water for the fish. Similarly, poultry droppings can serve as a source of food for the fish, and the fish waste can be used as a source of protein for the poultry. Therefore, the correct answer is 'I and III only'.

Steaming up ration is a special diet given to pregnant animals, especially cows, in the last few weeks before calving. It is designed to provide the necessary nutrients to the animal and the unborn calf, and to prepare the cow for lactation. Therefore, the correct answer is 'pregnant animals'.

Monocotyledonous crops typically have leaves with parallel venation. This means that the veins in the leaf run parallel to each other, extending from the base to the tip of the leaf without forming a complex network. The parallel arrangement of veins is a key characteristic that sets monocots apart from dicotyledonous plants (dicots), which have net-veined leaves.

A silo is a storage structure that is commonly used for bulk storage of grains, such as rice, wheat, maize, and other agricultural products. It is often installed by governments and agricultural organizations to store large quantities of harvested grains for future use and to ensure food security.

Assisting farmers in locating sources of farm inputs is the most relevant option for an extension agent to back up extension messages. This support ensures that farmers can implement the recommended practices effectively and achieve better agricultural outcomes.