Class 10 Biology Chapter 12
Human Population
Important Questions

Here, you'll find important questions related to Chapter 12 Human Population For ICSE Class 10 Biology. These questions have been crafted to assist students in their preparation for the ICSE Class 10 Biology Examination in 2023–24. By practising various question types, students can clarify their doubts, enhance their exam readiness, boost their confidence, and refine their problem-solving skills.

Introduction

The study of human population is a fundamental aspect of biology, and it holds a prominent place in the curriculum of Class 10 ICSE biology. Understanding the dynamics, growth, and impact of the human population on our planet is not only vital for academic purposes but also for comprehending the broader ecological and societal implications. In this context, important questions for Class 10 ICSE biology become an invaluable tool to navigate through this multifaceted subject. In the following discussion, we will delve into the fascinating realm of human population biology, exploring topics such as population growth, factors influencing population change, and the associated challenges and opportunities. Additionally, we will highlight the significance of addressing essential biology questions for Class 10 ICSE, as they play a pivotal role in solidifying one's knowledge and preparing for examinations in this crucial field of study.

What is Human Population?

Human population refers to the total number of living humans inhabiting a specific geographic area or the entire planet at a given point in time. It is a dynamic and ever-changing demographic entity that plays a crucial role in various aspects of biology, sociology, economics, and environmental science. Understanding the human population is essential for assessing the social, economic, and environmental challenges and opportunities that arise from its growth and distribution.
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Key factors related to human population include:

• Population Size: This is the most straightforward aspect, representing the total number of individuals in a given area or globally.
• Population Density: Population density is the number of individuals per unit area, such as people per square kilometre or square mile. It provides insights into how densely or sparsely populated an area is.
• Population Growth: Population growth refers to the change in the size of a population over time. It is influenced by birth rates (the number of births per year), death rates (the number of deaths per year), immigration (individuals moving into an area), and emigration (individuals leaving an area).
• Age Distribution: The distribution of age groups within a population can impact a society's demographic structure, affecting issues such as workforce availability, healthcare needs, and social services.
• Population Pyramids: Population pyramids are graphical representations of a population's age and sex distribution, providing insights into the demographic trends of a region or country.
• Demographic Transition: The demographic transition is a model that describes how populations change over time from high birth and death rates to low birth and death rates, typically associated with economic and social development.

Understanding human population dynamics is critical for addressing various global challenges, including resource management, environmental sustainability, urbanisation, healthcare, and social welfare. It also plays a significant role in policy-making and planning at local, national, and global levels.

Class 10 Biology Human Population Important Questions and Answers

Q1. Which letter is used to designate the birth rate (Natality)?

Options

(a) B 
(b) E 
(c) I
(d) K

Ans. (a) B

Explanation:
Natality (birth rate) is designated by the letter ‘B’. It is the number of individuals born in a population at a specific time. For humans, it is described as a number of individuals born per 1000 of the population per year.

Q2. Tubectomy involves tying off the………..?

Options

(a) Fallopian tubes
(b) Vas deferens
(c) Scrotum 
(d) Urethra

Ans. (a)
Explanation:
Tubectomy is a sterilisation procedure for females. It involves tying off the fallopian tube through an incision made in the abdomen or through the vagina.

Q3. Define the growth rate of the population. In what situation can this rate be negative ?

Explanation:
The growth rate of population is defined as the rate at which the number of individuals in a population increases at a given period of time. It is calculated as the difference between birth rate and death rate. The growth rate of the population can be negative when the death rate is higher than the birth rate of the population.

Q4. What is meant by population density ? How are women operated to prevent the entry of eggs into the oviduct ?

Explanation:
Population density is defined as the number of individuals living per square kilometre (km²) at any given time. Women are operated to prevent the entry of eggs into the oviduct by tubectomy in which a small portion of fallopian tubes are cut and the ends are tied with nylon thread.

Q5. Our resources cannot keep pace with the ever increasing population. Give three examples in support of this statement.

Explanation:
(i) With the growing number of people, there is insufficient food as growth in population is in geometric progression whereas increase in food production is in arithmetic progression.
(ii) There is a corresponding lack of housing, recreational facilities, clinics and hospitals to cope with the ever-increasing population.
(iii) There is limited land for factories and industries so there is unemployment due to an ever-increasing population.

ICSE Class 10 Biology Chapter wise Important Questions

Conclusion

The study of human population is not only a fundamental aspect of biology but also a critical discipline that touches upon a multitude of interconnected fields, including sociology, economics, and environmental science. Oswal.io provides a valuable resource in the form of a comprehensive collection of questions, aiding students in their preparation and deeper understanding of this crucial aspect of biology.

Frequently Asked Questions

Q1 : What is demography and why is it important?

Ans: The statistical study of the human population is called demography. It is important to assess the population size, sex ratio, and standard of living, and to understand the impact of population on the environment.

Q2 : What is the population size in India?

Ans:  The population size in India is about 138 crores. It is the second-largest in the world.

Q3 : How can we prevent population explosion?

Ans: Population explosion can be prevented by providing awareness about using birth control and implementing policies to encourage family planning.

Q4 : What is Population Explosion?

Ans: A rapid increase in the population is known as a population explosion.The two causes of population explosion are:

• Increase in the birth rate.
• Decrease in the death rate.

An increase in population is directly related to the birth rate. The population in India is rising at a considerable speed, which results in various problems, including social, economic and environmental.

Q5 : What is Population?

Ans: A group of all living organisms of a particular species existing in a specific geographical area, at one particular time with the capability of interbreeding, is called population.