FAQs on Organisms and Populations in One Shot (NCERT)

Question 1

1. What is the definition of an organism?

Accepted Answer

Ans. An organism is a living entity that is made up of one or more cells and exhibits characteristics such as growth, reproduction, metabolism, and response to stimuli. It can be a single-celled organism like bacteria or a complex multicellular organism like a human.

Question 2

2. What is the difference between an organism and a population?

Accepted Answer

Ans. An organism is an individual living being, while a population refers to a group of organisms of the same species that coexist in a particular area at a given time. While an organism is a single entity, a population represents the collective characteristics and interactions of multiple individuals of the same species.

Question 3

3. How do organisms contribute to the stability of populations?

Accepted Answer

Ans. Organisms play a crucial role in maintaining the stability of populations through various mechanisms. They can regulate population size through factors like competition for resources, predation, and disease. Additionally, organisms also engage in reproductive processes that ensure the continuation of the population, balancing birth rates and death rates.

Question 4

4. What are the factors that influence the distribution of organisms in a population?

Accepted Answer

Ans. The distribution of organisms within a population is influenced by several factors. These include the availability of resources such as food and water, environmental conditions like temperature and humidity, the presence of predators or competitors, and the ability of the organism to disperse and migrate to new areas.

Question 5

5. How does studying organisms and populations help in understanding ecological interactions?

Accepted Answer

Ans. Studying organisms and populations provides valuable insights into ecological interactions. By examining the dynamics of populations, their distribution patterns, and the factors influencing them, scientists can understand the complex relationships between organisms and their environment. This knowledge helps in understanding the functioning of ecosystems, the impact of human activities on biodiversity, and the conservation of species.

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