Challenger App

No.1 PSC Learning App

1M+ Downloads

Which of the following are examples of ecosystem services directly provided or supported by biodiversity?

  1. Pollination and climate regulation.
  2. Flood protection and soil fertility.
  3. Production of food, fuel, fibre, and medicines.
  4. Biodiversity prevents all natural disasters.

    Aii only

    Bi, ii, iii

    Ciii only

    DAll

    Answer:

    B. i, ii, iii

    Read Explanation:

    • Biodiversity provides an extensive array of ecosystem services. Pollination by insects and other animals is critical for food production.

    • Forests and oceans play a crucial role in regulating global climate by absorbing carbon dioxide.

    • Healthy ecosystems, like wetlands and mangroves, offer natural flood protection. Microorganisms in the soil maintain fertility.

    • Furthermore, biodiversity is the direct source of a vast majority of the world's food, fuel, textile fibers, and a significant portion of medicines, highlighting its tangible benefits to human society.


    Related Questions:

    What causes the decrease in oxygen content below the surface water layer?

    1. Increased photosynthetic activity at greater depths.
    2. Reduced penetration of sunlight, limiting photosynthesis.
    3. Enhanced diffusion of oxygen from the atmosphere.
    4. Decreased utilization of oxygen by decomposers.

      Identify the incorrect statement regarding ecosystem boundaries.

      1. Ecosystem boundaries are always clearly defined and rigid.
      2. Geographical barriers like mountains can separate different ecosystems.
      3. Ecosystems frequently blend into one another rather than having sharp divisions.

        Which of the following statements accurately describes the climate of hot deserts?

        1. Hot deserts typically experience mean annual temperatures below 20°C.
        2. Daytime summer temperatures in hot deserts frequently exceed 40°C.
        3. Clear skies and low humidity contribute to minimal diurnal temperature variations.
        4. Sandy deserts generally exhibit smaller diurnal temperature ranges compared to rocky deserts.

          What defines the Benthic Zone of a lake?

          1. It is the zone with the most abundant sunlight.
          2. It is the surface layer of the water.
          3. It comprises the floor or bottom of the lake.
          4. It is located above the Open Water Zone.
            ഒരു ജീവി ജീവിക്കുന്ന സ്വാഭാവികമായ ചുറ്റുപാടാണ്.