All practice questions

In the evolutionary transition of animal systems from primitive invertebrates to advanced terrestrial vertebrates, which sequence correctly reflects the increasing structural complexity of excretory organs?

A baker has a limited quantity of flour that can be used to produce either 20 loaves of bread or 5 cakes. If the baker decides to bake 5 cakes, what is the opportunity cost of this choice?

A central bank's statistical bulletin highlights that a country recorded a Gross National Product ($\text{GNP}$) of $\text{N}9,500\text{ million}$, a Net Domestic Product ($\text{NDP}$) of $\text{N}8,100\text{ million}$, and a Capital Consumption Allowance (depreciation) of $\text{N}600\text{ million}$ in a given fiscal year. What is the value of the Net Factor Income from Abroad ($\text{NFIA}$)?

A commercial bakery increases the retail price of a loaf of white bread from ₦500 to ₦700, causing households to purchase fewer loaves per week. Simultaneously, a national health campaign alters consumer preferences away from refined flour products. Which of the following correctly describes how these two events are represented on the demand curve for white bread?

When a seedling coleoptile is exposed to unilateral light, it bends towards the light source. Which of the following physiological processes accounts for this phototropic curvature?

A Lagos-based technology firm engages in three distinct business transactions: hiring software engineers for product development, buying server hardware to expand its operational infrastructure, and issuing 90-day commercial paper to cover short-term working capital needs. Based on economic criteria for classifying markets, in which market types do these three transactions occur, respectively?

When high inflationary pressure erodes domestic purchasing power, retail vendors may still accept physical bank notes for immediate over-the-counter sales, but credit institutions strictly refuse to grant long-term loans or record deferred debts denominated in that national currency. In this situation, which statement accurately distinguishes between the functional state of money's primary and secondary roles?

Match each stage of production in the palm oil supply chain with its correct net Value Added contribution to National Income based on the transaction values provided.

The Central Bank of a country executes an open market sale of government securities worth $\text{N}150\text{ billion}$ to the non-bank private public, who pay using cheques drawn on their commercial bank demand deposit accounts. If commercial banks operate under a mandatory cash reserve ratio of $20\%$ and hold no excess reserves, what is the immediate net change in the narrow money supply ($M_1$) and the ultimate maximum potential contraction in total commercial bank deposits?

A supplier operating in a perfectly competitive market doubles their daily output of a standardized commodity, yet discovers that the market selling price remains completely unchanged. Which characteristic of perfect competition best explains why this seller cannot unilaterally alter the market price?

As plants evolved from primitive aquatic thallophytes to advanced terrestrial forms, significant structural and physiological modifications occurred to facilitate survival on land. Which of the following statements correctly identifies a major evolutionary trend in plant adaptive features?

During the implementation of early industrialization strategies in Nigeria, the shift toward Import Substitution Industrialization (ISI) aimed to reduce foreign economic dependence. Which of the following best explains why this strategy paradoxically led to an increased demand for foreign exchange?

Complete the statement below regarding commercial policy differences between domestic and foreign commerce by identifying the correct economic term.

The evolutionary transition of plant life from aquatic habitats to land involved progressive structural adaptations in body plan, vascular architecture, and reproductive strategies. Arrange the following plant groups in order of increasing structural complexity and adaptation to terrestrial life, starting from the most primitive aquatic structural organization to the most advanced land plant group.

Match each economic term or policy concept relating to Nigeria's petroleum and mining sector on the left with its corresponding definition or economic impact on the right.

A government introduces various commercial policy interventions to regulate foreign trade and protect domestic markets. Match each commercial policy intervention on the left with its precise economic impact on domestic price, government revenue, or market welfare on the right.

Match each economic market scenario on the left with its corresponding type of demand classification on the right.

Match each application of genetics in medicine or agriculture listed on the left with its corresponding biological mechanism or practical outcome on the right.

In watermelon plants (*Citrullus lanatus*), solid green rind color ($G$) is dominant over striped rind color ($g$), and short fruit shape ($S$) is dominant over long fruit shape ($s$). A pure-breeding plant with solid green, short fruits is crossed with a plant having striped, long fruits. The resulting $F_1$ plants are self-pollinated to produce an $F_2$ generation of 800 offspring. How many of the $F_2$ plants are expected to produce striped, short watermelons?

The table below presents the Total Utility ($TU$) and Marginal Utility ($MU$) derived by a consumer from drinking successive bottles of fruit juice on a warm day:

Based on the table, what are the values of $X$ and $Y$, and at which quantity consumed is the consumer's point of satiety reached?