Thu. Sep 25th, 2025

Definition, Scope and Concepts

  1. Stability of an ecosystem depends upon :

    Options:
    1. Primary productivity
    2. No. of producers
    3. No. of consumers
    4. Interchange between producers and consumers

    Option: D

  2. Which one of the following is a part of geological cycle?

    Options:
    1. Carbon cycle
    2. Hydrogen cycle
    3. Hydrological cycle
    4. Nitrogen cycle

    Option: C

  3. All of the members of a particular species that live in a one area is / are called

    Options:
    1. Biome
    2. Population
    3. Community
    4. Ecosystem

    Option: B

  4. The simplest grouping of more than one kind of organism in the biosphere is

    Options:
    1. Population
    2. Ecosystem
    3. Community
    4. Species

    Option: B

  5. The environment effects man through

    Options:
    1. Biophysical limitations
    2. Behavioural controls
    3. Resource availability
    4. All of the above

    Option: D

  6. The ‘ law of the uniformitarianism’ was given by

    Options:
    1. James Hutton
    2. Charles Darwin
    3. Davis
    4. Penck

    Option: A

  7. In which year, the ‘law of uniformitarianism’ postulated :

    Options:
    1. 1795
    2. 1780
    3. 1785
    4. 1772

    Option: C

  8. Which of the following gases can deplete the ozone layer in upper atmosphere :

    Options:
    1. Methane
    2. Ammonia
    3. Carbon tetrachloride
    4. Sulphur dioxide

    Option: C

  9. Things you can do to decrease global warming include:

    Options:
    1. Reduce the usage of your conditioner on high
    2. Turn off light when you are not using them
    3. Use public transports instead of personal vehicles for transportation
    4. All of the above

    Option: D

  10. The energy flow in an ecosystem is/are :

    Options:
    1. Uni - directional
    2. Bidirectional
    3. Multi directional
    4. All of the above

    Option: D

  11. According to IPCC report, 2001 it is estimated that by the turn of the 21st century the concentration of carbon dioxide would go up to 540-970 ppm which may increase the temperature by :

    Options:
    1. 1.2 to 5.6 Degree celsius
    2. 1.4 to 5.6 degree celsius
    3. 1.4 to 5.8 degree celsius
    4. 1.4 to 5.8 degree celsius

    Option: C

  12. According to IPCC report ,2001 it is estimated that by the end of the 21st century the concentration of carbon dioxide would go upto 540 -970 ppmv which rise the sea level from the present level by :

    Options:
    1. 9-80 cm
    2. 9 - 88 cm
    3. 10 80 cm
    4. 9- 78 cm

    Option: B