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Ecology Test - 6

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Ecology Test - 6
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Weekly Quiz Competition
  • Question 1
    1 / -0
    What term describes the relationship between a species/population and its ecosystem in which it is living and breeding?
    Solution
    The ecological niche describes how an organism or population responds to the distribution of resources and competitors, and how it in turn alters those same factors.
  • Question 2
    1 / -0
    What is the best example of a mini ecosystem?
    Solution
    . An aquarium survives on dissolved oxygen content and fishes form dominating organisms in this ecosystem. Each living (fishes, fungal plants, etc.,) and non living organisms (sand, water) in this man made ecosystem interact closely with each other and the change in ones\' content significantly affects other.
  • Question 3
    1 / -0
    Which of the following is an abiotic factor in an aquatic ecosystem?
    Solution
    Abiotic factors are non-living chemical and physical parts of the environment that affect living organisms and the functioning of ecosystems. Oxygen is an abiotic factor that supports other living organisms.
  • Question 4
    1 / -0
    What is a biome?
    Solution
    A biome is a formation of plants and animals that have common characteristics due to similar climate and can be found over a range of continents
  • Question 5
    1 / -0
    DDT accumulates inside the body of any organism as it passes through the food chain. It is an example of which of the following processes?
    Solution
    DDT accumulates inside the body of any organism as it passes through the food chain. It is an example of biological magnification.
  • Question 6
    1 / -0
    By which of the following methods, carbon returns to atmosphere?
    Solution
    Respiration is defined as the movement of oxygen from the outside air to the cells within tissues, and the transport of carbon dioxide in the opposite direction.
  • Question 7
    1 / -0
    Which of the following processes is responsible for nitrogen fixation in atmosphere?
    Solution
    The conversion of ammonia into usable form Nitrate is called Nitrification.
  • Question 8
    1 / -0
    Select the correct order of energy flow in any ecosystem?
    Solution
    Correct Answer: Grass, goat, fox, lion
  • Question 9
    1 / -0
    Which of the following bacteria is responsible for nitrification?
    Solution
    Correct Answer: Nitrosomonas and Nitrobacter
  • Question 10
    1 / -0
    Which of the following is the correct order of components of any ecosystem?
    Solution
    Correct Answer: Abiotic environment, producers, consumers, decomposers
  • Question 11
    1 / -0
    Select the correct order of organisms in a food chain from the following data?
    Solution
    Correct Answer: Algae, fish, duck, human
  • Question 12
    1 / -0
    Which of the following calamity is not a natural calamity?
    Solution

    `War` is the correct answer. War is a state of armed conflict between societies. It is generally characterised by extreme aggression, destruction, and mortality, using regular or irregular military forces. An absence of war is usually called `peace`. `Warfare` refers to the common activities and characteristics of types of war, or of wars in general.

  • Question 13
    1 / -0
    Which of the following statement is appropriate for herbivores?
    Solution
    Herbivorous consume primary producers i.e. the autotrophs, and that's why they are called primary consumers.
  • Question 14
    1 / -0
    Which of the following statements is incorrect?
    Solution
    Plants provide protective cover on the land and prevent soil erosion for the following reasons: Plants slow down water as it flows over the land and this allows much of the rain to soak into the ground. Plant roots hold the soil in position and prevent it from being blown or washed away.

    Thus, statement 3 is incorrect.
  • Question 15
    1 / -0
    What does soil profile mean?
    Solution
    The soil profile is one of the most important concepts in soil science.
    The soil profile is defined as a vertical section of the soil from the ground surface downwards to where the soil meets the underlying rock.
  • Question 16
    1 / -0
    Which of the following soils is the best for the plant growth?
    Solution
    Loam soil is a mixture of soil that is the ideal plant-growing medium. It is actually a combination soil, normally equal parts of clay, silt, and sand, which gives the benefits of each with few of the disadvantages.
  • Question 17
    1 / -0
    Which of the following factors does not cause soil pollution?
    Solution
    (i) Plastic can release harmful chemicals into the surrounding soil, which can then seep into groundwater or other surrounding water sources and also the ecosystem of the world.
    This can cause serious harm to the species that drink the water.

    (ii) Pesticides secrete into soils and groundwater which can end up in drinking water, and pesticide spray can drift and pollute the air.

    (iii) Decomposers cause the dead algae and other plant parts to decay. The decay processtakes some time but no leftovers are left behind thus causing no pollution or harm to nature.

    (iv) Insecticides can be found in our air, our food, our soil, our water and even in our breast milk.
    Insecticides have been linked to a wide range of human health hazards, ranging from short-term impacts such as headaches and nausea to chronic impacts like cancer, reproductive harm, and endocrine disruption.

    So, option 3 is the correct answer here.
  • Question 18
    1 / -0
    What does environment mean?
    Solution
    The natural environment encompasses all living and non-living things occurring naturally, meaning in this case not artificial.
    The term is most often applied to the Earth or some parts of Earth.
    The surroundings or conditions in which a person, animal, or plant lives or operates is called Environment.
  • Question 19
    1 / -0
    What was the purpose of `Chipko movement`?
    Solution
    The Chipko movement or Chipko Andolan was to save trees or conservation of forests in India where people prevent trees from being cut down.

    The Chipko movement became a benchmark for socio-ecological movements in other forest areas of Himachal Pradesh, Rajasthan and Bihar; in September 1983, Chipko inspired a similar, Appiko movement in Karnataka state of India, where tree felling in the Western Ghats and Vindhyas was stopped.
  • Question 20
    1 / -0
    Which of the following activities is not a result of human interference?
    Solution
    An earthquake (also known as a quake, tremor or temblor) is the shaking of the surface of the Earth, resulting from the sudden release of energy in the Earth's lithosphere that creates seismic waves. Earthquakes range in size, i.e. from those that are so weak that they cannot be felt, to those violent enough to toss people around and destroy whole cities.
    The seismicity, or seismic activity, of an area is the frequency, type and size of earthquakes experienced over a period of time. The word 'tremor' is also used for non-earthquake seismic rumbling.
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