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Resources of India and World Test 78

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Resources of India and World Test 78
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  • Question 1
    1 / -0
    Cultivation of trees, Shrubs and other woody plants is known as __________.
    Solution
    Arboriculture is the cultivation of trees, shrubs, and other woody plants for shading and decoration. Arboriculture includes propagating, transplanting, pruning, applying fertiliser, spraying to control insects, etc.
  • Question 2
    1 / -0
    The flower given in the picture is of an achlorophyllous plant native to southern Africa. It is parasitic on the roots of members of the Euphorbiaceae family and emits an odour of faeces to attract its natural pollinators; carrion beetles. Identify it.

    Solution
    Hydnora Africana is one of the strangest plants in the world. It is totally parasitic, perennial that is without any chlorophyll or leaves at all. Hydnora Africana is an achlorophyllous plant in the family Hydnoraceae.
  • Question 3
    1 / -0
    This strange looking tree is an icon of Southern Africa's most arid habitats. It is a tall branching species of aloe also known as choje to the indigenous San people. Identify it.

    Solution
    Quiver trees (Aloe dichotoma) also known as kokerboom are species of aloe indigenous to South Africa, specifically in the Northern Cape region and Namibia. The tree is known as Quiver tree because branches and bark of the tree are used by Kalahari San Bushmen to make quivers for their arrows, hence the name.
  • Question 4
    1 / -0
    Mangroves are salt-tolerant plants of tropical and sub-tropical intertidal regions of the world. They are highly productive but extremely sensitive and fragile. Which of the following statements are true regarding them? 
    Solution
    Mangroves are salt-tolerant plants of tropical and subtropical intertidal regions of the world. The presence of mangrove ecosystems on coastline save lives and property during natural hazards such as cyclones, storm surges and erosion. They are breeding, feeding and nursery grounds for many estuarine and marine organisms. Hence, these areas are used for captive and culture fisheries. West Bengal has maximum percentage of mangrove cover in India. 2155 km squares area is covered with mangroves in West Bengal.
  • Question 5
    1 / -0
    This shark is rarely seen by humans and was discovered in 1976. It is found in deep tropical water and is believed that it swims with its mouth open. Name the shark.
    Solution
    • The Megamouth Shark is an extremely rare and unusual species of shark, discovered in 1976, with 36 specimens known to be caught or sighted as of 2006. It lives in the deep scattering layer of the ocean.
    • As its name suggests, it has a large mouth that can be as wide as 1.3 meters, although it has small teeth compared to the huge size of its mouth. 
    • These sharks are ovoviviparous, i.e. the mother gives birth to live young that have hatched from eggs within her body.
  • Question 6
    1 / -0
    Deciduous trees, unlike evergreens, shed their leaves periodically, which then regrow. Which of the following is not a deciduous tree?
    Solution
    • Spruces are evergreen coniferous trees that belongs to the family Pinaceae. There are about 35 species of spruce in the world. They are found in the northern temperate and taiga regions of the earth. 
    • These needled evergreens typically perform best in a site offering full sun, acidic soil and good drainage but don’t grow well in clay soil.
  • Question 7
    1 / -0
    Marsupials are the only mammals that incubate and carry their young ones in special pouches. Most marsupials are found in Australia. Which of the following is the only marsupial to be found in North America?
    Solution
    The only marsupial found in the United States and Canada is Virginia opossum or common opossum. Whereas, Australia is home to around 250 different species of marsupial. It includes kangaroos, koalas, wombats, wallaby etc.
  • Question 8
    1 / -0
    There are two basic branches of soil science, $$\underline{(i)}$$ is concerned with the influence of soils on living things, particularly plants and $$\underline{(ii)}$$ is focused on the formation, morphology and classification of soils in their natural environment. Select the option which correctly fills the blanks.
    Solution
    • Edaphology mainly focuses on how soil influences living things especially plants. It involves the study of how soil affects the way human nature uses the land for growing plants.
    • Pedology, on the other hand, involves the study of soil classification and soil morphology. It is the study of soils, including their chemical and physical properties as they are in their natural environment. 
  • Question 9
    1 / -0
    Araku Valley is a hill station in Visakhapatnam district in the state of Andhra Pradesh in India. The area around it has rich biodiversity. It is famous for its plantation of
    Solution
    • Araku Valley Arabica Coffee has a pleasant acidity with a citrus note of grapefruit and a mild jaggery-like sweetness with light to medium strength.
    • This variety is produced by the tribals, who follow an organic approach in which they emphasise management practices involving substantial use of organic manures, green manuring and organic pest management practices.
    • It is grown in the region of  Visakhapatnam district in Andhra Pradesh.
  • Question 10
    1 / -0
    Which hydro-electric project produces maximum power energy?
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