TEST OF PRACTICAL KNOWLEDGE QUESTION (a) Give three reasons for stocking K (TILAPIA) and L (CATFISH) together in a pond. (b) List four fishing gears used fo...

Answer Details

(a) Three reasons for stocking Tilapia (K) and Catfish (L) together in a pond are:

1. Mutualism: Tilapia and Catfish have a symbiotic relationship where Tilapia feed on algae and other aquatic plants, helping to maintain water quality, while Catfish feed on Tilapia waste, helping to reduce the buildup of excess nutrients in the pond.
2. Better utilization of resources: Stocking both Tilapia and Catfish in the same pond allows for the efficient use of space, food, and other resources.
3. Increased production: Stocking both species in the same pond can lead to increased production and a more diverse product offering, as both Tilapia and Catfish have different market demands and growth rates.

(b) Four fishing gears used for harvesting Tilapia and Catfish in a pond are:

1. Cast nets: Used to capture large numbers of fish at once.
2. Seine nets: Used to enclose a section of the pond and harvest the fish within.
3. Traps: Used to capture fish in specific areas of the pond.
4. Hooks and lines: Used to target individual fish or smaller groups.

(c) Four products that could be made from Milk (M) are:

1. Cheese: A dairy product made from milk curdled with bacteria or an acid.
2. Butter: A dairy product made by churning cream until it becomes solid.
3. Yogurt: A dairy product made by fermenting milk with bacteria.
4. Ice cream: A frozen dessert made with milk, sugar, and flavorings.

(d) Four reasons for adding Lime (N) to the pond in which Tilapia and Catfish are stocked are:

1. pH adjustment: Lime can help to adjust the pH of the water, making it more alkaline and creating a better environment for Tilapia and Catfish.
2. Algae control: Lime can help to control the growth of algae and other aquatic plants, reducing competition for food and oxygen.
3. Increased water hardness: Lime can increase the hardness of the water, which can benefit Tilapia and Catfish by providing a more stable environment for growth.
4. Disease prevention: Lime can help to prevent the spread of some diseases by creating a less hospitable environment for disease-causing organisms.