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CBSE-IX-Social-Science

05: Natural Vegetation and Wildlife

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    5 - Natural Vegetation and Wildlife
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    Section : I
    Page No 51:
  • Qstn #1
    Choose the right answer from the four alternatives given below.
  • Qstn #1-i
    To which one of the following types of vegetation does rubber belong?

    -(a) Tundra
    (c) Himalayan
    (b) Tidal
    (d) Tropical Evergreen
    Ans : To which one of the following types of vegetation does rubber belong?

    (d) Tropical Evergreen
  • Qstn #1-ii
    Cinchona trees are found in the areas of rainfall more than

    -(a) 100 cm
    (c) 70 cm
    (b) 50 cm
    (d) less than 50 cm
    Ans : Cinchona trees are found in the areas of rainfall more than

    (d) less than 50 cm
  • Qstn #1-iii
    In which of the following states is the Simlipal bio-reserve located?

    -(a) Punjab
    (c) Delhi
    (b) Orissa
    (d) West Bengal
    Ans : In which of the following states is the Simlipal bio-reserve located?

    (b) Orissa
  • Qstn #1-iv
    Which one of the following bio-reserves is not included in the world network of bio-reserves?

    -(a) Manas
    (c) Gulf of Mannar
    (b) Dihang-Dibang
    (d) Nanda devi
    Ans : Which one of the following bio-reserves is not included in the world network of bio-reserves?

    (a) Manas
    SECTION I SECTION I Page No 52:
  • Qstn #2
    Answer the following questions briefly.
  • Qstn #2-i
    Define an ecosystem.
    Ans : Ecosystem is a system of interdependence comprising the physical environment and the organisms living therein.
  • Qstn #2-ii
    What factors are responsible for the distribution of plants and animals in India?
    Ans : Temperature, humidity, precipitation, land and soil are the factors responsible for the distribution of plants in India. The nature of plants in an area, to a large extent, determines the animal life of that area.
  • Qstn #2-iii
    What is a bio-reserve? Give two examples.
    Ans : A bio-reserve is a conserved ecosystem. It is managed in such a way that not only is its biodiversity preserved but also its resources are used in a sustainable manner for the benefit of the local communities. Examples: The Nilgiris, Sunderbans
  • Qstn #2-iv
    Name two animals having habitat in tropical and montane type of vegetation.
    Ans : Tropical animals - Tiger, elephant

    Montane animals - Snow leopard, spotted deer
  • Qstn #3-i
    Flora and fauna
    Ans : Flora: This term denotes the species of plants of a particular region or period

    Fauna: This term denotes the species of animals of a particular region or period.
  • Qstn #3-ii
    Tropical evergreen and deciduous forests
    Ans : Tropical Evergreen Forests

    Tropical Deciduous Forests

    Present in areas receiving more than 200 cm of rainfall
    Present in areas receiving rainfall between 200 cm and 70 cm
    Since the region is warm and wet throughout the year, there is no definite time for the trees to shed their leaves
    The trees shed their leaves for about six to eight weeks in dry summer
    Examples: ebony, mahogany, rubber, rosewood
    Examples: 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
    In India, these forests are located in the heavy rainfall areas of Western Ghats and the island groups of Lakshadweep and Andaman and Nicobar, upper parts of Assam and Tamil Nadu coast
    The wet deciduous forests are located in the eastern part of India - northeastern states, along the foothills of the Himalayas, Jharkhand, West Orissa and Chattisgarh, and on the eastern slopes of Western Ghats.

    The dry deciduous forests are located in the rainier parts of the Peninsular Plateau and the plains of Bihar and Uttar Pradesh.
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