Environment Quiz -2

26 Questions

Settings
Please wait...
Environment Quiz -2

.


Questions and Answers
  • 1. 
    1. Parasites like leeches, lice, ticks, mites etc. feed on body fluid of hosts. 2. Parasites are host specific. 3. Predators are not host specific. 4. Newly acquired parasites and predators are more dangerous than older ones. Which of the above is/are true? Page- 252
    • A. 

      1,2,3

    • B. 

      2,3,4

    • C. 

      1,2,3,4

    • D. 

      1,3,4

  • 2. 
    Difference between parasites and predators- 1. parasites are smaller in size 2. predators are host specific, parasites are not 3. predators are more mobile than parasites Which of the above is/are true? Page- 252
    • A. 

      1,3

    • B. 

      1,2

    • C. 

      1,2,3

    • D. 

      1 only

  • 3. 
    1. Same biotic community can have seasonal variation in plant communities. 2. Physiognomy refers to external appearance of "look" of the community 3. Several communities may have similar physiognomy Which of the above is/are true? Page- 252
    • A. 

      1,2

    • B. 

      1,2,3

    • C. 

      1,3

    • D. 

      None

  • 4. 
    Stratification of various species in water bodies is determined by- 1. light penetration 2. temperature profile 3. oxygen profile Page- 253
    • A. 

      1,2

    • B. 

      1 only

    • C. 

      2 only

    • D. 

      1,2,3

  • 5. 
    Stratification of biotic community- 1. provides physical structure to plant community 2. leads to increase in number of species 3. leads to efficient use of resources Which of the above is/are true about stratification? Page- 253
    • A. 

      1,2,3

    • B. 

      1,3

    • C. 

      2,3

    • D. 

      1,2

  • 6. 
    1. Ecology is the study of interactions only among organisms, not with their environment. 2. Environment includes only atmosphere. Which of the above is/are true? Page- 229
    • A. 

      1,2

    • B. 

      1

    • C. 

      2

    • D. 

      None

  • 7. 
    1. Heliophytes are shade tolerant plants. 2. Shade tolerant plants have low rates of photosynthesis, respiration and metabolism. Which of the above is/are true? Page- 240
    • A. 

      1

    • B. 

      2

    • C. 

      1,2

    • D. 

      None

  • 8. 
    1. It helps transport oxygen produced during photosynthesis. 2. imparts buoyancy to plants Which of the above is/are true about Aerenchyma? Page- 241
    • A. 

      1

    • B. 

      2

    • C. 

      1,2

    • D. 

      None

  • 9. 
    1. Pneumatophores are respiratory roots. Takes oxygen from atmosphere to main roots. 2. Mangroves have deep roots like that found in cacti. 3. Vivipary refers to germination of seeds on plant. Saves seed from saline water. Which of the above is/are true? Page- 242
    • A. 

      1,3

    • B. 

      2,3

    • C. 

      1,2

    • D. 

      All

  • 10. 
    1. Oligotrophic soils are low in nutrients. 2. Mycorrhizae helps in efficient nutrient absorption. They can live both inside and on the surface of roots. Which of the above is/are true? Page- 242
    • A. 

      1

    • B. 

      2

    • C. 

      1,2

    • D. 

      None

  • 11. 
    1. In hibernation body temperature and heart beat decreases, but breathing rate increases. 2. Butterflies exhibit only batesian mimicry. Which of the above is/are true? Page- 243
    • A. 

      1

    • B. 

      2

    • C. 

      1,2

    • D. 

      None

  • 12. 
    1. Echolocation exhibited by some bats are based on principle of SONAR. 2. Some animal/s in extremely arid regions excrete solid urine. 3. There is nothing called solid urine. Which of the above is/are true? Page- 243/244
    • A. 

      1,3

    • B. 

      1,2

    • C. 

      3 only

    • D. 

      None

  • 13. 
    Camels- 1. use water economically 2. can tolerate hight temperature, but not fluctuations in body temperature. 3. are able to maintain blood stream moisture even during extreme heat. Which of the above is/are true about camels? Page- 244
    • A. 

      1,2

    • B. 

      1,2,3

    • C. 

      1,3

    • D. 

      2 only

  • 14. 
    Glycerol- 1. lowers freezing point of body fluids 2. protects animals in cold weathers 3. helps in tolerating saline conditions 4. some algae have glycerols. Which of the above is/are true? Page- 244
    • A. 

      1,2,3

    • B. 

      2,3

    • C. 

      1,2,3,4

    • D. 

      None

  • 15. 
    1. There is little mixing of gases between troposphere and stratosphere. 2. Troposphere contains ozone layer. 3. Growth and reproduction of an organism is affected by only biotic factors. Which of the above is/are true? Page- 233
    • A. 

      1

    • B. 

      2

    • C. 

      3

    • D. 

      2,3

  • 16. 
    • A. 

      3

    • B. 

      2

    • C. 

      1

    • D. 

      None

  • 17. 
    Water vapour- 1. regulates hydrological cycle 2. absorbs infrared radiation 3. maintains heat balance of earth with ozone and carbon dioxide. Which of the above is/are true about water vapour? Page- 233
    • A. 

      1,2

    • B. 

      1,2,3

    • C. 

      2,3

    • D. 

      1,3

  • 18. 
    1. Species composition and stratification are structural features of ecosystem. 2. Standing crop refers to amount/number of both living material and their detritus. 3. Standing crop has nothing to do with number of living material Which of the above is/are true? Page- 261
    • A. 

      1,3

    • B. 

      1,2

    • C. 

      1

    • D. 

      2

  • 19. 
    1. Oaks are broad leafed. 2. They are found in tropical deciduous forests. 3. Oak forests do not have epiphytes at all. 4. Oak forests are never leaf less. Which of the above is/are true about Oaks? Page- 274
    • A. 

      1,4

    • B. 

      1,2

    • C. 

      1,3

    • D. 

      1,2,3

  • 20. 
    1. Pyramid of energy is sometimes inverted in case of reverse energy flow. 2. When fish outnumber phytoplanktons in oceans, pyramid of biomass can be inverted. 3. Pyramid of biomass takes into account dry weight. Which of the above is/are true? Page- 267
    • A. 

      1,3

    • B. 

      1,2

    • C. 

      1,2,3

    • D. 

      2,3

  • 21. 
    1. Savannahs can be natural or anthropogenic. 2. Most Indian savannahs are anthropogenic - formed by continued grazing, fire and deforestation. 3. Savannahs generally have distinct wet and dry climates. Which of the above is/are true? Page- 275
    • A. 

      1,2,3

    • B. 

      1,3

    • C. 

      1,2

    • D. 

      2,3

  • 22. 
    1. Primary productivity of grasslands is related to amount of rainfall. 2. Grasslands never have dicotyledonous species and legumes due to low rainfall. Which of the above is/are true? Page- 275
    • A. 

      1

    • B. 

      2

    • C. 

      1,2

    • D. 

      None

  • 23. 
    Invasion of woody species in grassland is controlled by- 1. low rainfall 2. grazing 3. fire Which of the above is/are true? Page- 275
    • A. 

      1,2

    • B. 

      1

    • C. 

      2

    • D. 

      1,2,3

  • 24. 
    • A. 

      All

    • B. 

      1,2,3

    • C. 

      1,2

    • D. 

      2,3

  • 25. 
    Humus- 1. is dark colored 2. is amorphous 3. undergoes fast decomposision 4. is resistant to microbial action Which of the above is/are true? Page- 263
    • A. 

      1,2,3

    • B. 

      1,2,4

    • C. 

      1,2

    • D. 

      1,2,3,4

  • 26. 
    1. Rate of decomposition is slow in high moisture conditions as there is heavy precipitation. 2. Temperature, moisture and chemical quality of detritus control rate of decomposition. Which of the above is/are true? Page- 264
    • A. 

      1

    • B. 

      2

    • C. 

      1,2

    • D. 

      None