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Demand and Supply — Agriculture Economics Reviewer Questions

1,000 board-style Demand and Supply items for the Agriculturist Licensure Examination. Try 10 questions free; lifetime access is ₱59. Fixed versus variable, average versus marginal, and cost versus return are the distinctions most items are built on. Get those clean first.

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Sample Demand and Supply questions with answers and explanations

Board-style items taken from the Agriculture Economics bank. Every answer is explained, which is the part that makes a review question worth doing twice.

  1. Which statement best states the law of demand for palay, other factors held constant?

    • A. A higher price reduces quantity demanded. correct
    • B. A higher price increases quantity demanded.
    • C. Income alone fixes quantity demanded.
    • D. Quantity demanded is unrelated to price.

    Why: The law of demand states that price and quantity demanded move inversely, ceteris paribus.

  2. In Bukidnon, the price of palay falls and buyers purchase more, with income and tastes unchanged. How should this be described?

    • A. An increase in demand
    • B. An increase in quantity demanded correct
    • C. A decrease in demand
    • D. A decrease in quantity demanded

    Why: A change caused only by the good’s own price is movement along the demand curve, called a change in quantity demanded.

  3. For a palay market, Qd = 80 − 2P and Qs = 8 + 1P. What is the equilibrium quantity?

    • A. 37
    • B. 27
    • C. 32 correct
    • D. 24

    Why: Set Qd = Qs: 80 − 2P = 8 + 1P. Thus P = 24 and Q = 32.

  4. Initial demand is Qd=100−2P and supply is Qs=10+1P. Demand then becomes Qd=112−2P. Which equilibrium comparison is correct?

    • A. Price falls from 30 to 34.
    • B. Price stays at 30.
    • C. Price rises from 34 to 46.
    • D. Price rises from 30 to 34. correct

    Why: Equating each demand equation with supply gives P0=30 and P1=34; the rightward demand shift raises equilibrium price.

  5. A drought causes a temporary palay shortage. Which policy is most likely to improve access without suppressing the price signal needed to attract supply?

    • A. Targeted cash or food assistance to vulnerable households correct
    • B. A universal ceiling far below equilibrium
    • C. Mandatory destruction of private stocks
    • D. A prohibition on interregional shipments

    Why: Targeted assistance protects vulnerable consumers while retaining price incentives for conservation and added supply.

  6. Which survey design would best estimate household demand for palay across income groups?

    • A. Interview only buyers at one premium store and omit income.
    • B. Use a stratified probability sample, record quantities, prices and incomes, and pretest standardized questions. correct
    • C. Ask volunteers one yes/no question after a price shock.
    • D. Select only the largest households and infer all quantities.

    Why: Stratification improves representation, while standardized, pretested measures capture the key demand variables.

  7. Which statement best states the law of supply for corn, other factors held constant?

    • A. A higher price decreases quantity supplied.
    • B. Supply is fixed by consumer income.
    • C. A higher price increases quantity supplied. correct
    • D. Price never affects planned sales.

    Why: The law of supply describes a direct relation between price and quantity supplied, ceteris paribus.

  8. A new harvesting technology lowers the unit cost of producing corn in Bohol. What happens to market supply?

    • A. The supply curve shifts left.
    • B. There is only movement up the curve.
    • C. Quantity supplied falls at every price.
    • D. The supply curve shifts right. correct

    Why: Lower production cost raises the amount sellers offer at each price, shifting supply right.

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