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Exam Year: 2021

  • ,

    “Bollgard I and Bollgard II technologies are mentioned in the context of:

    (a)

    Clonal propagation of crop plants

    (b)

    Developing genetically modified crop plants

    (c)

    Production of plant growth substances

    (d)

    Production of biofertilizers

    Correct Answer:

    (b)

  • ,

    In case of which one of the following biogeochemical cycles, the weathering of rocks is the main source of release of nutrient to enter
    the cycle?

    (a)

    Carbon cycle

    (b)

    Nitrogen cycle

    (c)

    Phosphorus cycle

    (d)

    Sulphur cycle

    Correct Answer:

    (c)

  • ,

    R2 Code of Practices’ constitutes a tool available for promoting the adoption of

    (a)

    environmentally responsible practices in electronics recycling industry

    (b)

    ecological management of Wetlands of International Importance under the Ramsar Convention

    (c)

    sustainable practices in the cultivation of agricultural crops in degraded land

    (d)

    ‘Environmental Impact Assessment’ in the exploitation of natural resources

    Correct Answer:

    (a)

  • ,

    With reference to street lighting, how do sodium lamps differ from LED lamps?

    1.Sodium lamps produce light in 360 degrees, but it is not so in the case of LED lamps.
    2.As streetlights, sodium lamps have a longer lifespan than LED lamps.
    3.The spectrum of visible light from sodium lamps is almost monochromatic, while LED lamps offer significant color advantages in street lighting.
    Select the correct answer using the code given below:

    (a)

    3 only

    (b)

    2 only

    (c)

    1 and 3 only

    (d)

    1, 2, and 3

    Correct Answer:

    (c)

  • ,

    Which one of the following is used in preparing a natural mosquito repellent?

    (a)

    Congress grass

    (b)

    Elephant grass

    (c)

    Lemongrass

    (d)

    Nut grass

    Correct Answer:

    (c)

  • ,

    Consider the following kinds of organisms:
    1. Copepods
    2. Cyanobacteria
    3. Diatoms
    4. Foraminifera
    Which of the above are primary producers in the food chains of oceans?

    (a)

    1 and 2

    (b)

    2 and 3

    (c)

    3 and 4

    (d)

    1 and 4

    Correct Answer:

    (b)

  • ,

    With reference to recent developments regarding ‘Recombinant Vector Vaccine,’ consider the following statements:

    1. Genetic engineering is applied in the development of these vaccines.
    2. Bacteria and viruses are used as vectors.
    Which of the statements given above is/are correct?

    (a)

    1 only

    (b)

    2 only

    (c)

    Both 1 and 2

    (d)

    Neither 1 nor 2

    Correct Answer:

    (c)

  • ,

    Which one of the following effects of the creation of black money in India has been the main cause of worry to the Government of India?

    (a)

    Diversion of resources to the purchase of real estate and investment in luxury housing

    (b)

    Investment in unproductive activities and purchase of precious stones, jewelry, gold, etc.

    (c)

    Large donations to political parties and the growth of regionalism

    (d)

    Loss of revenue to the State Exchequer due to tax evasion

    Correct Answer:

    (d)

  • ,

    What is blue carbon?

    (a)

    Carbon captured by oceans and coastal ecosystems

    (b)

    Carton sequestered in forest biomass and agricultural soils

    (c)

    Carbon contained in petroleum and natural gas

    (d)

    Carbon present in atmosphere

    Correct Answer:

    (a)

  • ,

    Leaf litter decomposes faster than in any other biome, and as a result, the soil surface is often almost bare. Apart from trees, the vegetation is largely composed of plant forms that reach up into the canopy vicariously by climbing the trees or growing as epiphytes rooted on the upper branches of trees. This is the most likely description of:

    (a)

    coniferous forest

    (b)

    dry deciduous forest

    (c)

    mangrove forest

    (d)

    tropical rainforest”

    Correct Answer:

    (d)