GENERAL ECOLOGICAL CHARACTERITICS OF INDIAN POPULATION

191 B
CLASS 16

NATURE
POPULATION DISTRIBUTION OF INDIA
POPULATION SIZE OF INDIA
HOW POPULATION

IS DIVIDED IN INDIA
LINUASTIC
ETHNIC
STATE WISE
CASTE SYSTEM

interbreeding occurs is called population
It is distingused into two types:
Monospecific

Population: Group of individual belong to the same species
Polyspecific Population: Group of individual belong to different species
Population density: It is defined as number of individuals in relation to definite unit or space

of all the organisms especially with large or conspicuous organisms

eg.census in human population

Sampling methods : A small proportion of population is counted which is used to estimate the total population.It can be done by following way
Use of quadrate: Count all the individual of the several quadrate and extrapolate the average to the whole area.The shape and size of the quadrate vary with different organisms

with nearly a fifth of the world's population. According to the

2019 revision of the World Population Prospect population stood at 1,352,642,280

speak Assamese, Bengali, Gujarati, Maithili, Kannada, Malayalam, Marathi, Odia, Punjabi, Tamil, Telugu, Urdu and a variety of other languages. There are a total

of 122 languages and 234 mother tongues. The 22 languages are Languages specified in the Eighth Schedule of Indian Constitution and 100 non-specified languages.

not recognise racial or ethnic groups within India,[120] but recognises many of the

tribal groups as Scheduled Castes and Tribes (see list of Scheduled Tribes in India).
According to a 2009 study published by Reich et al., the modern Indian population is composed of two genetically divergent and heterogeneous populations which mixed in ancient times (about 1,200–3,500 BP), known as Ancestral North Indians (ANI) and Ancestral South Indians (ASI). ASI corresponds to the Dravidian-speaking population of southern India, whereas ANI corresponds to the Indo-Aryan-speaking population of northern India
 700,000 people from the United States live in India.

 Between 300,000 and 1 million Anglo-Indians live in India.

Educationally Backward Classes Commission" (SEBC) or Mandal Commission of 1979.

This was completed in 1983.
there has not yet been a proper consensus on contemporary figures
The caste system divides Hindus into four main categories - Brahmins, Kshatriyas, Vaishyas and the Shudras.
Many believe that the groups originated from Brahma, the Hindu God of creation.
For centuries, caste has dictated almost every aspect of Hindu religious and social life, with each group occupying a specific place in this complex hierarchy.

107,583,437) 25-54 years: 41.08% (male 271,744,709/female 254,834,569) 55-64 years: 7.45% (male 47,846,122/female 47,632,532) 65+ years: 6.24%

(male 37,837,801/female 42,091,086) (2017 est.)
Median age:Total: 28.7 years
Male: 28 years
female: 29.5 years (2020 est.)[102]

above, in 2011)[103] 81.4% (total population, age 15–25, in 2006)[104]
Per cent

of population below poverty line:22% (2006 est.)
Unemployment rate:7.8%