शुक्रवार, 28 जुलाई 2017

Class –IX GEOGRAPHY Natural Vegetation And Wildlife

Class –IX
Natural Vegetation And Wildlife
Question 1. Choose the right answer from the four alternatives given below:
(i) To which one of the following types of vegetation does rubber belong to?
(a) Tundra
(b) Tidal
(c) Himalayan
(d) Tropical Evergreen
Answer : (d) Tropical Evergreen
(ii) Cinchona trees are found in the areas of rainfall more than
(a) 100 cm
(b) 50 cm
(c) 70 cm
(d) less than 50 cm
Answer : (a) 100 cm
(iii) In which of the following state is the Simlipal bio-reserve located?
(a) Punjab
(b) Delhi
(c) Odisha
(d) West Bengal
Answer : (c) Orissa
(iv) Which one of the following bio-reserves of India is not included in the world network of bioreserve?
(a) Manas
(b) Nilgiri
(c) Gulf of Mannar
(d) Nanda devi
Answer : (a) Manas
Question 2. Answer the following questions briefly.
(i) Define an ecosystem.
Answer : (i)All the plants and animals in an area are interdependent on each other. The plants and animals, alongwith their physical environment make the ecosystem. Interrelation between plants and animals in the natural environment is called Ecosystem
(ii) What factors are responsible for the distribution of plants and animals in India?
Answer (ii)Factors responsible for the distribution of plants and animals in India are:
(a) Relief: Land and soil
(b) Climate: Temperature, Humidity, Photoperiod and Precipitation.
(iii) What is a bio-reserve? Give two examples.
Answer :(iii)Bio-reserves are the large areas where vegetation, wildlife and the environment are conserved to preserve the biological diversity. In totality there are 14 bio-reserves in India. For e.g. Sunderbans Bio-reserve in West Bengal and Nanda Devi Bio-reserve in Uttaranchal.
(iv) Name two animals having habitat in tropical and montane type of vegetation.
Answer :(iv) Tropical animals: Tiger, Elephant Montane animals: Snow Leopard, Spotted dear
Question 3. Distinguish between
(i) Flora and Fauna
Answer :
Tropical Evergreen ForestsTropical Deciduous Forests
The Plant species of particular region or period are called Flora.The animal species of particular region or period are called Flora.
(ii) Tropical Evergreen and Deciduous forests
Answer :(ii)
Tropical Evergreen ForestsTropical Deciduous Forests
These are also called Rain ForestThese are also called Monsoon Forest.
Since the region is warm and wet throughout the year, there is no definite time for the trees to shed their leavesThe trees shed their leaves for about six to eight weeks in dry summer
Examples: ebony, mahogany, rubber, rosewoodExamples: teak, bamboo, sandalwood, peepal, neem
Common animals found in these forests are elephants and monkeys.Common animals found in these forests are lions and tigers
Present in areas receiving more than 200 cm of rainfallPresent in areas receiving rainfall between 200 cm and 70 cm
Question 4. Name different types of Vegetation found in India and describe the vegetation of high altitudes.
Answer : The different types of vegetation found in India are:
(i) Tropical Evergreen Forests
(ii) Tropical Deciduous Forests
(iii) Tropical Thorn Forests and Scrubs
(iv) Montane Forests
(v) Mangrove Forests
Alpine vegetation is found at places over 3,600 m in height. The trees common to these are silver fir, junipers, pines and birches. The trees get stunted as they reach the snow line. There are shrubs and scrubs that ultimately merge into Alpine grasslands. Tundra vegetation is limited to lichens and mosses.
Question 5. Quite a few species of plants and animals are endangered in India. Why?
Answer : Few species of plants and animals are endangered in India because of:
→ Increase in population.
→ Urbanization and Industrialization.
→ Large scale deforestation.
→ Pollution.
→ Hunting for pleasure and commercial purpose, etc.
Question 6. Why has India a rich heritage of flora and fauna?
Answer : India has a rich heritage of flora and fauna due to following reasons:
→ India is a diverse country with different relief features (i.e. mountains, plateaus, plains, etc.) Different types of vegetations are found in these regions and the vegetations support different type of animals.
→ Availability of different types of soil providing base for different type of vegetations.
→ Variation in the climatic conditions (Temperature, humidity, etc.). Climate of India differs from north to south and east to west. Thus, supporting large variety of flora and fauna.
→ India has a monsoon type of climate where rainfall varies from 20 cms to 300 cms distributed through out the year supporting large amount of flora and fauna.
→ Variation in the duration of sunlight at different places due to difference in the latitude and altitude.
Map Skills
On an outline map of India, label the following.
(i) Areas of Evergreen Forests
(ii) Areas of Dry Deciduous Forests
(iii) Two national parks each in Northern, Southern, Eastern and Western parts
of the Country

कोई टिप्पणी नहीं:



ईमेल *

संदेश *