Ecosystems and Cycles
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What is the primary factor that determines the nature of an ecosystem?

  • Climatic conditions such as sunlight, temperature, and rainfall (correct)
  • The presence of specific plant species
  • The type of soil in the region
  • Geographical features such as hills, mountains, and rivers

    • Which cycle is not a part of the energy flow in the ecosystem?

  • The Water cycle
  • The Nitrogen cycle (correct)
  • The Oxygen cycle
  • The Carbon cycle

    • What is the primary role of decomposers in an ecosystem?

  • To produce energy through photosynthesis
  • To regulate the population size of producers
  • To break down dead organic matter into simpler substances (correct)
  • To consume other organisms for sustenance

    • Which type of ecosystem is characterized by a specific and recognizable landscape form?

    <p>Forest ecosystems</p> Signup and view all the answers

    What is the main focus of ecological pyramids?

    <p>Energy flow between different trophic levels</p> Signup and view all the answers

    Which factor plays a crucial role in defining the structure and functions of an ecosystem?

    <p>Climatic conditions such as sunlight and temperature</p> Signup and view all the answers

    What are the two major habitat conditions for the Earth’s living organisms?

    <p>Terrestrial and aquatic ecosystems</p> Signup and view all the answers

    Which of the following is not a biogeographical realm mentioned in the text?

    <p>Neotic realm</p> Signup and view all the answers

    What is the main characteristic that differentiates ecosystems?

    <p>Interaction with non-living environment and each other</p> Signup and view all the answers

    Which region forms a major part of the Oriental realm according to the text?

    <p>Eurasia</p> Signup and view all the answers

    What type of ecosystems are highly fragile according to the text?

    <p>Mountain ecosystems</p> Signup and view all the answers

    Which level forms biogeographical regions according to the text?

    <p>National or state level</p> Signup and view all the answers

    What forms the biosphere at a global level according to the text?

    <p>The thin skin of the earth on the land, the sea, and the air</p> Signup and view all the answers

    Which type of ecosystem is quickly destroyed by human activities according to the text?

    <p>Island ecosystems</p> Signup and view all the answers

    What is genetic diversity?

    <p>The variety of genes within a species</p> Signup and view all the answers

    What does in-situ conservation of biodiversity involve?

    <p>Conserving species within their natural habitats</p> Signup and view all the answers

    Which value of biodiversity refers to the direct use of biological resources for food, medicine, and other products?

    <p>Consumptive value</p> Signup and view all the answers

    What is the primary characteristic of a mega diversity nation?

    <p>High number of endemic species</p> Signup and view all the answers

    Which factor poses a threat to biodiversity by leading to the loss of natural habitats?

    <p>Habitat loss</p> Signup and view all the answers

    What is the main focus of ex-situ conservation of biodiversity?

    <p>Conserving species in zoos and botanical gardens</p> Signup and view all the answers

    What is genetic diversity?

    <p>The differences in genes among the individuals of a species</p> Signup and view all the answers

    Why is genetic variability essential for a healthy breeding population of a species?

    <p>To ensure the survival of the gene pool</p> Signup and view all the answers

    What is the primary role of modern biotechnology in relation to genetic diversity?

    <p>Manipulating genes to prevent extinction of species</p> Signup and view all the answers

    How can the reduction in the number of breeding individuals lead to potential extinction of a species?

    <p>It reduces genetic variability and causes in-breeding</p> Signup and view all the answers

    What does biodiversity include at different scales in space?

    <p>Variety and richness of all plant and animal species</p> Signup and view all the answers

    What is the main consequence of using wild relatives of crop plants to create new varieties of more productive crops?

    <p>Reduction in genetic diversity</p> Signup and view all the answers

    How has science’s understanding of biological diversity contributed to 'development'?

    <p>It has improved health care and crop production</p> Signup and view all the answers

    What is the negative effect of modern consumerist society on biological resources?

    <p>Overexploitation and decline in biological resources</p> Signup and view all the answers

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