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Mindmap: Organism and Population | Biology Class 12 - NEET PDF Download

Mindmap: Organism and Population | Biology Class 12 - NEET

The document Mindmap: Organism and Population | Biology Class 12 - NEET is a part of the NEET Course Biology Class 12.
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FAQs on Mindmap: Organism and Population - Biology Class 12 - NEET

1. What is an organism?
Ans. An organism refers to any living entity that displays all the characteristics of life, such as the ability to grow, reproduce, respond to stimuli, and maintain homeostasis. It can be a single-celled organism like bacteria or a complex multicellular organism like humans or plants.
2. How are populations defined in biology?
Ans. In biology, a population refers to a group of individuals of the same species that live in the same geographical area and have the potential to interbreed. Populations are characterized by their size, density, distribution, and genetic diversity.
3. What factors influence the size of a population?
Ans. Several factors influence the size of a population, including birth rate, death rate, immigration (individuals entering the population), and emigration (individuals leaving the population). Additionally, factors like availability of resources, competition, predation, and environmental conditions can also impact population size.
4. How is population density calculated?
Ans. Population density is calculated by dividing the total population size by the area in which the population is distributed. It provides an estimate of the number of individuals per unit area or volume and helps in understanding the spatial distribution of a population.
5. How does natural selection affect populations?
Ans. Natural selection is a mechanism of evolution that acts on populations. It favors the survival and reproduction of individuals with traits that are well-suited to their environment, leading to changes in the frequency of certain traits over generations. This process can result in adaptations that enhance the fitness of individuals within a population, ultimately shaping its characteristics.
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