Population Growth

Correct answer: A. Births exceed deaths, but the gap becomes smaller than before

Direct answer: Option A. A population can continue to increase as long as additions are greater than removals, but its growth rate can decline when the difference becomes smaller. For example, if births exceed deaths by 500 in one period and by 200 in the next, the population still grows in both periods, but the amount and rate of growth are lower in the second period. Option A states exactly this condition. Option B would produce negative natural change if migration did not offset it, so population would tend to decline rather than keep increasing. Option C is impossible as a condition for a growing population. Option D is unrelated to population growth and is not a demographic measure. The key distinction is between direction and speed: positive growth tells us that population is increasing; a declining rate tells us that it is increasing more slowly. Memory cue: “still positive, but smaller” means growth continues at a lower rate.

Correct answer: A. The growth rate may increase

The direct answer is A: the growth rate may increase. Natural increase depends mainly on the difference between the birth rate and the death rate. If both rates fall but the death rate falls faster, the gap between births and deaths can become wider. For example, if the birth rate falls from 30 to 24 while the death rate falls from 20 to 10, the gap changes from 10 to 14, so natural growth rises. Migration can also affect total population growth, so the word “may” is important rather than “must.” Option B is wrong because falling death rates do not make the population automatically zero. Option C is wrong because area alone does not determine growth. Option D is wrong because migration continues to influence total change. Memory cue: compare the gap between birth and death rates, not one rate alone.

Correct answer: A. Absolute increase is the actual number, and growth rate is a percentage comparison

The direct answer is A. Absolute increase tells us the actual number added or lost between two population counts. It is found by subtracting the earlier population from the later population. Growth rate expresses the change relative to the starting population, usually as a percentage, so it makes comparisons between places or periods easier. For example, an increase of 1,000 people may be large for a small town but small for a huge city; the percentage gives useful context. Option B is wrong because births are only one component of population change. Option C confuses growth measures with area and density. Option D is wrong because both measures require a comparison over time. Memory cue: absolute increase answers “how many?”, while growth rate answers “what percentage of the starting population?”

Correct answer: A. वृद्धि संख्या में बदलाव है और लिंग अनुपात पुरुष महिला अनुपात बताता है

The direct answer is A. Population growth means a change in the total number of people living in a place over a period of time. It may be positive when the population increases or negative when it decreases. This change is influenced by births, deaths and migration. Sex ratio is a different idea: it describes the balance or relationship between females and males in a population. Therefore, growth measures change in population size, while sex ratio describes one part of population composition. B is wrong because the two indicators answer different questions. C is wrong because area means the size of land, usually measured in square kilometres, not the relationship between males and females. D is wrong because population growth includes people of all sexes, not only males. Memory cue: growth asks “how many people changed?”, while sex ratio asks “how are males and females represented?”

Correct answer: A. साक्षरता जागरूकता बढ़ाकर परिवार आकार के निर्णय प्रभावित कर सकती है

The direct answer is A. Literacy means the ability to read and write with understanding, and education can improve awareness of health, contraception, child care and the economic responsibilities of a family. When people have better information, they may make more informed decisions about marriage, spacing between children and family size. This does not mean that literacy alone determines population growth; culture, income, healthcare, employment and public policies also matter. A is therefore balanced because it says literacy can influence decisions, not that it always produces one fixed result. B is wrong because education does not always double the birth rate; such an absolute claim is unsupported. C is wrong because literacy can affect population behaviour and health choices. D is wrong because literacy does not always increase death rates; education often supports awareness of health and prevention. Memory cue: literacy influences choices, but it is not the only cause of population change.

Correct answer: A. यदि वृद्धि सेवा क्षमता से तेज हो तो दबाव बढ़ता है

The direct answer is A. Social service capacity is the ability of facilities and systems to meet people’s needs. It includes schools, hospitals, drinking-water supply, sanitation, housing, transport and emergency services. To analyse the situation, compare the number of people needing services with the capacity available. If the population grows faster than facilities and staff can be added, demand becomes greater than supply. The result may be overcrowded classrooms, pressure on hospitals, water shortages, longer waiting times and weaker service quality. B is wrong because population size determines how many people may need services. C is wrong because slow expansion can leave essential needs unmet; speed must be judged against demand and quality. D is wrong because a larger population generally creates more service needs, not fewer. Memory cue: when users grow faster than facilities, pressure grows.

Correct answer: A. तेजी से बढ़ते जोखिम क्षेत्र में भविष्य के राहत केंद्रों की योजना बनाना

The direct answer is A. Population growth data tells planners how the number of people in a place is changing. If a flood-, cyclone-, earthquake- or landslide-prone area is growing rapidly, future disasters may affect more residents and place greater demands on evacuation, shelter, food, water and medical assistance. Authorities can use population estimates to decide where relief centres should be located, how many people they may need to hold and which routes should be prepared. B is unrelated to disaster preparedness. C describes an observation that does not measure population or plan relief. D is unrelated to population estimates and emergency services. The data does not predict every disaster by itself, but it helps estimate likely human needs. Memory cue: population data answers “how many people may need help?”

Correct answer: A. वृद्धि फिर भी बनी रह सकती है क्योंकि जन्म मृत्यु से अधिक रह सकते हैं

The direct answer is A. Natural increase depends on the difference between the birth rate and the death rate, not simply on whether each rate is rising or falling. Suppose the birth rate falls from 30 to 24 per thousand, while the death rate falls from 20 to 10 per thousand. Both rates have declined, but births still exceed deaths by 14 per thousand, so natural increase remains positive. Migration can also affect total population growth, so it should be considered when complete data are available. B is wrong because declining rates do not make the population instantly zero. C is wrong because area does not determine growth by itself. D is wrong because nothing in the situation proves that migration will stop. The key comparison is birth rate minus death rate. Memory cue: compare the gap, not just the direction of change.

Correct answer: B. दूसरे क्षेत्र में

The direct answer is B. Percentage growth compares the increase with the original, or base, population. For the first area, the numerical increase is 5,500 − 5,000 = 500. Its percentage growth is 500 ÷ 5,000 × 100 = 10%. For the second area, the increase is 700 − 500 = 200. Its percentage growth is 200 ÷ 500 × 100 = 40%. Although the first area gained more people in absolute numbers, the second area grew by a larger percentage because its original population was much smaller. A is wrong because it confuses absolute increase with percentage growth. C is wrong because 10% and 40% are not equal. D is wrong because both populations increased. Memory cue: percentage growth always uses the starting population as the denominator; do not compare only the number of people added.

Correct answer: A. प्रारंभिक जनसंख्या बहुत बड़ी थी

The direct answer is A. Absolute growth is the actual number of people added, while growth rate expresses that increase as a percentage of the starting population. A very large state may add many people even when the increase is a small percentage of its large base. For example, an increase of 1 million people is 10% of a base of 10 million but only 1% of a base of 100 million. Thus, a large initial population can produce high absolute growth and low growth rate at the same time. B is wrong because a small base can make a given increase look large in percentage terms, not usually low in rate. C is wrong because a zero population cannot produce the stated comparison. D is wrong because the starting population is the denominator in the growth-rate calculation. Memory cue: absolute growth counts added people; growth rate compares them with the starting base.

Correct answer: A. Total number is stable but population composition may change

Answer: A, the total population can remain stable while its composition changes. Actual or total growth depends on births, deaths, and net migration. Net migration is the difference between in-migration and out-migration. If roughly equal numbers enter and leave, their net effect on the total is zero, so the population count may not change. However, the people who enter may differ from those who leave in age, sex, education, occupation, or family situation. Therefore, the age structure, workforce, skills, and demand for services may change even when the total number stays constant. A is correct because it distinguishes gross movement from net change. B is wrong because high in- and out-migration means many people moved. C is wrong because migration can strongly affect composition and services even with zero net effect. D is wrong because population can still be counted. Memory cue: zero net migration does not mean zero migration.

Correct answer: A. When time period and territorial boundary are not clear

Answer: A. Population growth is meaningful only when both the place and the time of comparison are clearly defined. To find absolute growth, we compare the population of the same territory at two specified times. If the boundary changes, the difference may reflect an administrative change rather than real population change. If the time period is unclear, we cannot know whether the increase occurred over five years, ten years, or another duration. B is not wrong when the same area is compared in two census years. C improves analysis because rate and absolute increase show different aspects. D is not wrong because migration is one component of population change and should be included when relevant. Memory cue: a valid comparison needs the same place and a known time interval.

Correct answer: A. Looking at births deaths migration base population and service capacity together

Answer: A. A balanced analysis studies both the causes of numerical change and its practical effects. Births add people, deaths remove people, and migration changes the population through people entering or leaving. The base population is important because the same number of additional people produces different rates in small and large populations. Service capacity matters because schools, hospitals, housing, water, transport, and employment must be related to the number and characteristics of residents. B is incomplete because birth rate is only one factor. C ignores births and migration, so it cannot explain total change. D is unrealistic because migration may be important in many areas. A is strongest because it combines demographic components, the starting population, and planning needs. Memory cue: growth analysis means components plus context, not one isolated rate.

Correct answer: A. Growth is not only numerical change but a process linked with resource planning and social structure

Answer: A. Population growth first describes a change in the number of people over a specified time, but its meaning is broader for planning. Births, deaths, and migration influence the number, while age structure, skills, occupations, and household characteristics influence the kind of population present. Resource planning must consider whether the population can be supported with suitable schools, health care, housing, water, transport, and employment. B is wrong because birth rate is only one measure or component, not the complete meaning of growth. C is wrong because migration can increase or decrease a population. D is wrong because growth always refers to change over a time period. A is mature because it connects numerical change with social structure and the responsible planning of resources. Memory cue: population growth is number change plus its human and planning consequences.

Correct answer: A. It can remain positive and rapid

Answer: A. Natural population growth depends on the difference between the birth rate and the death rate, not on whether each rate is individually rising or falling. For example, if the birth rate falls from 30 to 25 per thousand while the death rate falls from 20 to 10 per thousand, the gap changes from 10 to 15 per thousand. Both rates declined, but the birth rate is still much higher, so natural increase becomes larger. The exact result depends on the actual values and the time period, but a faster fall in death rate can keep growth positive and may make it rapid. B is wrong because falling rates do not automatically make growth negative. C is wrong because equal rates, not merely falling rates, would be needed for zero natural increase. D is wrong because total growth can also be affected by migration. Memory cue: compare the gap, not just the direction of each rate.

Correct answer: A. Total population may increase

Correct answer: A, total population may increase. First calculate natural change: births minus deaths. Because the death rate is higher than the birth rate, natural change is negative, so the resident population would decrease if there were no migration. However, total population change also includes net migration. If the number entering is greater than the natural loss and any people leaving, the migration gain can more than compensate for the natural decrease. Option B is too absolute: it ignores the large immigration stated in the question. Option C is wrong because stability would require the gains and losses to balance exactly. Option D is wrong because population can be measured through demographic records and censuses. Memory cue: total change = natural change + net migration.

Correct answer: C. Death rate falls rapidly and birth rate remains high for long

Correct answer: C. Population explosion refers to a period of unusually rapid population growth. It commonly occurs when death rates fall quickly because of better food, sanitation, medicine, or living conditions, while birth rates remain high for a considerable time. The gap between births and deaths then becomes large, producing rapid natural increase. Option A would create natural decrease because deaths exceed births. Option B would produce little or no natural increase, so it would not explain an explosion. Option D means net migration is zero; it says nothing about a large difference between births and deaths and therefore cannot by itself explain rapid natural growth. The key is not merely a high birth rate, but a sustained gap between high births and falling deaths. Memory cue: falling deaths plus continuing high births creates the demographic gap.

Correct answer: D. Population is increasing but the pace is slowing

Correct answer: D, population is increasing but the pace is slowing. A growth rate measures the speed or percentage of change, whereas total population is the actual number of people. If the rate changes from 2% to 1%, the population can still rise; it is simply adding people more slowly than before. Option A is wrong because a declining rate is not the same as a negative rate. Population declines only when losses exceed gains. Option B is wrong because a lower rate does not mean births have stopped completely. Option C is also too strong: it is not necessary that deaths always exceed births, especially when migration may contribute to growth. Option D accurately describes a positive but decelerating increase. Memory cue: slower growth is still growth as long as the rate remains positive.

Correct answer: A. Absolute growth may increase

Answer: A, absolute growth may increase. Absolute growth means the actual number of people added, whereas growth rate is the percentage added to the starting population. Use the relation: absolute increase = rate × base population. If the rate is 10%, 10% of 100 people is 10, but 10% of 1,000 people is 100. Thus, the percentage can remain unchanged while the numerical addition becomes larger as the base becomes larger. A is correct because it describes this possibility. B is wrong because a positive rate does not produce zero addition. C is wrong because absolute growth can be measured by subtracting the initial population from the final population. D is wrong because absolute growth is not the birth rate; it is affected by births, deaths and migration. Memory cue: same percentage plus a bigger base means more people.

Correct answer: A. Previous and current population, birth-death gap, net migration, rate and impact

Answer: A. A sound analysis begins by comparing the earlier and current population, because this shows the numerical change. Next calculate natural increase by comparing births and deaths: births minus deaths. Then examine net migration, which is in-migration minus out-migration. These components together explain total population change. After that, calculate the rate by relating the change to the starting population and consider effects on resources, services and planning. A is correct because it follows a complete evidence-based sequence. B is wrong: area and rainfall may influence settlement, but they do not by themselves analyse population growth. C is wrong: density and sex ratio are useful population characteristics, not the complete growth process. D is wrong: rivers and mountains are physical features and cannot alone establish growth. Memory cue: compare, calculate, add migration, find rate, interpret impact.

Correct answer: A. It explains population change and planning needs over time through births, deaths and migration

Answer: A. Population growth is the change in population over a period of time. To understand it properly, consider births, deaths and migration. Births and deaths determine natural increase, while immigration and emigration determine the migration component. The rate and size of change help planners think about schools, health care, housing, employment, transport and other services. A is the most balanced conclusion because it includes causes, time and practical planning needs without claiming that one factor explains everything. B is wrong because density means people per unit area; it describes concentration, not the change in population over time. C is wrong because population growth is not a change in land area. D is wrong because population change can affect demand for resources and services. Memory cue: growth is change over time; density is people per area.

Correct answer: A. Total growth may decrease

Answer: A, total growth may decrease. Total population change can be understood as natural increase plus net migration. Natural increase depends mainly on births minus deaths. If the birth rate stays stable, that part does not automatically rise. Emigration means people leaving the area, so a sudden increase in emigration makes net migration more negative. This can reduce total growth and, if large enough, may even produce a decline. A is correct because it says “may,” allowing for the size of births, deaths and migration. B is wrong because emigration does not automatically double growth. C is wrong because natural increase also depends on deaths, and emigration is not a birth. D is wrong because migration does not make the death rate zero. Memory cue: out-migration subtracts people from the place they leave.

Correct answer: A. Growth can increase pressure but outcomes depend on resource availability and management

Direct answer: Option A is correct. Population growth generally increases demand for food, water, housing, energy, transport, education and health services. However, the final result is not identical everywhere. It depends on how much resource is available, whether it is distributed fairly, how efficiently it is used, whether technology improves, and how well planning and conservation are managed. Therefore, growth can create pressure without automatically causing total exhaustion. Option B is too absolute: resources do not always end, because management, conservation and innovation can change outcomes. Option C is also absolute and false; a larger population does not make resources unlimited. Option D is wrong because population size affects demand and resource use. Memory cue: population changes demand, while availability and management shape the result.

Correct answer: A. National growth may be moderate but a city may grow fast due to migration

Direct answer: Option A is correct. Scale means the level at which we study a population pattern, such as local, regional, national or global. A country may show moderate overall growth, while one city receives many migrants for employment or education and therefore grows rapidly. The national average can hide this local change, so planners must examine more than one scale. Option B is wrong because birth rates, death rates and migration flows differ from place to place. Option C is wrong because local growth affects housing, transport, schools, water supply and jobs directly. Option D is wrong because population growth can be measured at village, city, district, national and world levels. Memory cue: an average at a larger scale can hide a sharp change at a smaller scale.

Correct answer: A. जन्म, मृत्यु और प्रवास संतुलित हों, पर आयु समूहों का अनुपात बदल जाए

The direct answer is A. Population size and population structure are different ideas. Size means the total number of people, while structure describes how those people are arranged by age, sex, occupation or other characteristics. Suppose births and people arriving are balanced by deaths and people leaving. The total can then remain nearly stable. However, the shares of children, working-age adults and older people may change. For example, fewer births may reduce the proportion of children, while longer survival may increase the proportion of older people. Option A is correct because it keeps the total balanced but allows the composition to change. Option B is wrong because a statement that everything is zero and nothing changes does not describe a changing structure. Option C is wrong because a change in area affects density, not necessarily the population structure. Option D is unrelated to demographic structure. A useful warning is that a stable total does not mean a stable population profile. Administrators may still need different schools, hospitals or employment policies when the age composition changes.