2024 WAEC Agric Practical Specimens Questions and Answers

Summary

This engaging YouTube video from the Exam Bonance channel dives into the practical aspects of Agricultural Science, focusing on the identification, uses, and maintenance of various agricultural tools and specimens. The presenter guides viewers through the expected questions for an Agricultural Science practical exam, covering the identification of surveying tools like the ranging pole and arrow, the uses and maintenance of a measuring tape, and the characteristics of wooden pegs. The video also explores soil specimens, emphasizing experiments related to soil properties, and the economic importance of different pests, such as maize weevils and grasshoppers, on crop yield and quality. Control methods for these pests are discussed, along with the economic significance of tilapia in aquaculture due to its adaptability, consumer acceptance, and disease resistance. The video concludes with a step-by-step guide on converting tilapia into fish meal, a valuable feed ingredient. The presenter encourages viewer interaction through comments and direct messages, offering assistance for upcoming exams.

Takeaways

• 📝 The video discusses 24 different practical specimens related to agriculture, focusing on their identification, uses, and maintenance practices.
• 📐 Specimen A, the ranging pole, is a straight, round surveying tool with a pointed metal end, painted in alternating bands of color, and is approximately 6 meters long.
• 🧰 Maintenance practices for surveying equipment like the ranging pole include cleaning after use, storing in a dry and cool place, sharpening the metal end, and oiling or greasing metallic parts.
• 📏 Specimen C, the measuring tape, is used for measuring length, height, breadth, or distance, and also for determining right-angle triangles in farm layout.
• 🪵 Specimen D, the wooden peg, is a wooden rectangular stick with pointed edges used for marking points and tying ropes for straight lines in farming.
• 🌱 Specimen E, F, and G involve soil samples where students may be asked to determine properties like population rates, organic content, and water absorption rates.
• 🐛 Specimen H (maize weevil) and I (bean seed) are pests that cause economic damage through food shortage, reduced seed viability, decreased market value, and increased production costs.
• 🦗 Specimen J (grasshopper) and K (cotton stainer) are insects with different feeding habits; grasshoppers bite and chew, while cotton stainers pierce and suck.
• 🐟 Specimen L, the tilapia, is a cultivable fish species due to its ability to breed in captivity, tolerance of poor water quality, acceptance by consumers, resistance to diseases, early maturity, and acceptance of artificial feed.
• 🍲 The process of preparing fish meal from tilapia (specimen L) involves cooking, pressing to extract oil and water, separating the liquid, evaporating the water to a concentrate, drying, and grinding.
• ✅ The video emphasizes the importance of knowing the identification, uses, and maintenance of agricultural tools and organisms for practical exams, providing detailed descriptions and economic significance.

Q & A

What are the common surveying tools discussed in the video?

The common surveying tools discussed in the video include the ranging pole, arrow, measuring tape, and wooden peg.

What is the primary function of a ranging pole in surveying?

The primary function of a ranging pole is to mark stations, make straight lines, and mark points that need to be visible from a distance.

How should a ranging pole be described in an exam?

In an exam, a ranging pole should be described as a straight, round surveying tool with a pointed metal end, painted in alternating bands of color, such as red and white, and is about 6 meters long.

What are the common maintenance practices for surveying tools?

Common maintenance practices for surveying tools include cleaning the instrument after use, storing it in a dry and cool place, sharpening the metal end, and oiling or greasing the metallic parts.

What are the uses of the arrow as a surveying tool?

The arrow is used for marking off lengths, marking stations, and marking points of intersection.

What is the main use of a measuring tape in surveying?

The main use of a measuring tape in surveying is to take measurements of length, height, breadth, or distance, and to determine the right angle in farm layout.

How should a wooden peg be described?

A wooden peg should be described as a wooden rectangular stick with pointed edges that are used for stocking into the ground.

What are two uses of a wooden peg in surveying?

Two uses of a wooden peg are marking points and tying ropes in making straight lines on a farm.

What are the economic importances of maize weevil and bean weevil?

The economic importances of maize weevil and bean weevil include causing food shortage due to destruction of grains, reducing seed viability, reducing market value and income, and increasing the cost of production due to the need for pesticides.

How can maize weevil be controlled?

Maize weevil can be controlled by using dry hot pepper, storing maize in airtight containers, using appropriate insecticides, early harvesting, deep freezing, and heat treatment.

What are the characteristics that make tilapia a good candidate for aquaculture?

Characteristics that make tilapia suitable for aquaculture include the ability to breed in captivity, tolerance to poor water quality, acceptance by consumers, high resistance to diseases, early maturity, and acceptance of artificial feed.

What are the steps involved in preparing fish meal from tilapia?

The steps involved in preparing fish meal from tilapia are cooking the fish, pressing it to extract oil and water, separating the liquid into oil and water, evaporating the water into a concentrate, drying the concentrate, and grinding it into fish meal.