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CLASS IX Geography
CHAPTER 5
Evergreen
Do not shed their
leaves together
heavy rain
Deciduous- . Shed their
leaves together in dry
summer
Rainfall between 200
cms-70cms
Factors of
growth
types
Natural vegetation&
wild life
Wild life
Thorn forest
Sandy soil
Rainfall >70cms
elephant
Mountain forest- seen
in mountains eg
Himalaya
camels
Mangrove- seen in
coastal areas
rhinocers
Chousingha
deer
Land -rough terrain
support vegetation
Soil- sandy soil
support desert
vegetation
Temperature- high
temperature
support dense
vegetation
Precipitation-areas
of heavy rainfall
has dense
vegetation
Nilgai
Conservation measures
 Biosphere reserves
 Financial &technical assistance to botanical gardens
 Project Tiger,Project Rhino etc
 Setting up of National parks, Wild life Sanctuaries etc.
KEY POINTS
1 India is one of the twelve mega bio-diversity countries of the world. With about 47,000
plant species India occupies tenth place in the world and fourth in Asia in plant diversity.
2 India account for 6 per cent of the world’s total number of flowering plants.
3 The country has many non- flowering plants such as ferns, algae and fungi.
4 India also has approximately 90,000 species of animals as well as a rich variety of fish in its
fresh and marine waters.
Factors Responsible for Diversity in Flora and Fauna
Relief : It include type of land like mountain ,plains etc
Soil :Fertile soil supports dense vegetation
Climate :It include temperature and precipitation. Areas of high temperature and rainfall
support dense vegetation.
TYPES OF VEGETATION
The following major types of vegetation may be identified in our country. They are:-(1) Tropical EvergreenForests
(2) TropicalDeciduousForests
(3)TropicalThorn Forest and scrubs
(4) MountainForests
(v)Mangrove Forests.
Tropical evergreen forest:- they are found in areas having more than 200cms rainfall. There
is no definite time for the trees to shed their leaves. Important areas are Western Ghats.
Important trees are Ebony Mahogany etc.
1. Tropical deciduous forest:- they are found in areas where the rainfall is between
200cms-100cms.Trees shed their leaves for about six to eight weeks in dry summer.
2. It is subdivided into moist and dry deciduous.
3. Important trees in wet deciduous are teak, bamboos, shisham and that in dry
deciduous are teak, sal, peepal etc.
4. These forests mostly exist in foothills of Himalayas, Jharkhand, Orissa, Eastern slopes
of Western Ghats etc.
Thorn forest and scrubs:1 they exist in areas with less than 70cms rainfall.
2 They are mostly found in Rajasthan, Madhya Prasesh, Chhattisgarh etc.
3 Acacias palm, cacti etc are important plants here.
Montane forest:1 they are found in the mountainous areas.
2 Here the type of vegetation changes with increase in height.
3 Important species of trees found here are pine, deodar, spruce cedar etc.
Mangrove forest:1 They are found in coastal areas.
2 In this forest the roots are submerged under water.
3 Important species are sundari tree, palm coconut etc.
Wild life:1 India is rich in its fauna.
2 It has approximately 90,000 of animal species.
3.The country has about 2,000 species of birds.
4.There are 2,546 species of fish, which account for nearly 12% of the world’s stock
WILD ANIMALS
NATURAL HABITAT
1
Elephant
Forests of Assam, Karnataka, Kerala
2
One horned rhinocer
Marshy & swampy areas of Assam &Bengal
3
Wild Ass & Camels
Rann of Kachchh&Thar desert
4
Indian lions
Gir forest in Gujarat
5
Tiger
Madhya Pradesh,West Bengal
6
Yak
Ladakh
7
Snow leopard, Red panda
Himalayan region
To protect the flora and fauna the government has taken followings steps.
(i) Fourteen biosphere reserves have been set up in the country to protect flora and
fauna.
(ii)Financial and technical assistance is provided too many Botanical Gardens by the
government since 1992. developmental projects have been introduced
(iii) 89 National Parks, 490 Wildlife sanctuaries and Zoological gardens are set up to
take care of Natural heritage.
Fourteen Bio-reserves
Sunderbans
Simlipal
Gulf of Mannar
Dihang-Dibang
The Nilgiris
DibruSaikhowa
Nanda devi
Agasthyamalai
Nokrek
Kanchenjunga
Great Nicobar
Pachmari
Manas
Achanakmar-Amarkantak
Chapter-6
POPULATION
Age
structure
occupation
Sex ratio
composition
Literacy rate
health
Reducing IMR
transport
National
population
Free education t o
children
relief
climate
population
Factors
affecting
distribution of
population
Fertile soil
Universal
immunisation
resources
industry
adolescents
Delayed marriage
migration
Factors
affecting
Population
growth
growth
Birth rate
Death rate
Key points

Density of population:- The number of people living in per square km area is the
density of population.

Population Growth: Growth of population refers to the change in the number of
inhabitants of a country/territory during a specific period of time.

Processes of Population Change/Growth
a. Birth rate is the number of live births per thousand persons in a year. It is a major
component of growth because in India, birth rates have always been higher than death
rates.
b. Death rate is the number of deaths per thousand persons in a year. The main cause
of the rate of growth of the Indian population has been the rapid decline in death rates.
c. Migration is the movement of people across regions and territories. Migration can
be internal (within the country) or international (between the countries).

Age Composition: The age composition of a population refers to the number of
people in different age groups in a country. It is one of the most basic characteristics
of a population.The population of a nation is generally grouped into three broad
categories:
a. Children (generally below 15 years)They are economically unproductive and need
to be provided with food, clothing, education and medical care.
b. Working Age (15-59 years)They are economically productive and biologically
reproductive. They comprise the working population.
c. Aged (Above 59 years)They can be economically productive though they may
have retired. They may be working voluntarily but they are not available for
employment through recruitment.

Sex Ratio. Sex ratio is defined as the number of females per 1000 males in the
population.

Literacy Rates: Literacy is a very important quality of a population. Obviously, only
an informed and educated citizen can make intelligent choices and undertake research
and development projects. Low levels of literacy are a serious obstacle for economic
improvement.

Occupational Structure: The percentage of population that is economically active is
an important index of development. The distribution of the population according to
different types of occupation is referred to as the occupational structure
a.Primary activities include agriculture, animal husbandry, forestry, fishing, mining
and quarrying etc.
b. Secondary activities include manufacturing industry, building and construction
work etc.
c.Tertiary activities include transport, communications, commerce, administration
and other services.

Health :Health is an important component of population composition, which affects
the process of development. Sustained efforts of government programmes have
registered significant improvements in the health conditions of the Indian population.

National Population Policy: Recognising that the planning of families would
improve individual health and welfare, the Government of India initiated the
comprehensive Family Planning Programme in 1952. The Family Welfare
Programme has sought to promote responsible and planned parenthood on a voluntary
basis.

NPP 2000 and Adolescents: NPP 2000 identified adolescents as one of the major
sections of the population that need greater attention.
Besides nutritional requirements, the policy put greater emphasis on other important
needs of adolescents including protection from unwanted pregnancies and sexually
transmitted diseases (STD).
It called for programmes that aim towards encouraging delayed marriage and childbearing, education of adolescents about the risks of unprotected sex, making
contraceptive services accessible and affordable, providing food supplements,
nutritional services, strengthening legal measures to prevent child marriage.