Environment Quiz - 1

26 Questions

Settings
Please wait...
Environment Quiz - 1

.


Questions and Answers
  • 1. 
    1. Pollution can be natural. 2. DDT and benzene hexachloride are non-biodegradable 3. Aerosols can be both solids and liquids. 4. Air pollutant can be a gas Which of the above is/are true? Page- 310
    • A. 

      1,3,4

    • B. 

      1,2,3

    • C. 

      All

    • D. 

      1,4

  • 2. 
    1. Pollen dust and smoke(not always) are natural sources of polllution. 2. Secondary air pollutants are formed during chemical reaction between primary air pollution and other atmospheric constituents. 3. Above reaction generally takes place in presence of sunlight Which of the above is/are true? Page-311
    • A. 

      1,2

    • B. 

      1,3

    • C. 

      1,2,3

    • D. 

      None

  • 3. 
    • A. 

      1,2

    • B. 

      1,4

    • C. 

      All

    • D. 

      1,3,4

  • 4. 
    1. Photochemical smog is a secondary pollutant. 2. It is brown in intense solar radiation. 3. It is grey in lesser solar radiation. 4. It consists mainly of ozone, Nitrogen oxides and PAN. Which of the above is/are true about photochemical smog? Page-312
    • A. 

      2,3,4

    • B. 

      1,3,4

    • C. 

      3,4

    • D. 

      All

  • 5. 
    • A. 

      1

    • B. 

      2

    • C. 

      3

    • D. 

      None

  • 6. 
    1. Concentration of ozone layer is measured in Dobsons unit. 2. 1 DU = 1 ppb 3. Ozone hole was first discovered over antarctica in 1985. 4. Over Arctic, ozone hole was discovered in 1990. Which of the above is/are true? Page- 325
    • A. 

      2,3,4

    • B. 

      1,2,3

    • C. 

      1,3,4

    • D. 

      All

  • 7. 
    1. Chloroflorocarbons, methane and nitrous oxide cause ozone hole. 2. Carbon dioxide is the only major greenhouse gas not depleting ozone. 3. CFCs are the most damaging. Which of the above is/are true? Page-325
    • A. 

      1,2,3

    • B. 

      2 only

    • C. 

      1,3

    • D. 

      3 only

  • 8. 
    1. Ozone hole increases the amount of UV-B reaching the earth's surface. 2. 1% decrease in ozone leads to 2% increase in UV-B reaching earth's surface. Which of the above is/are true? Page- 325
    • A. 

      1

    • B. 

      2

    • C. 

      1,2

    • D. 

      None

  • 9. 
    During subsequent successional stage in an ecosystem- 1. structure becomes complex 2. function becomes complex 3. food web is simplified 4. efficiency of energy use and nutrient conservation increases 5. average size of individuals increases
    • A. 

      1,2,4,5

    • B. 

      1,2,3,4

    • C. 

      1,2,3,4,5

    • D. 

      2,3,4,5

  • 10. 
    1. Species in a biotic community interact with each other for food, space, reproduction and protection. 2. Flowers are insect specific and insects are flower specific for pollination. Which of the above is/are true? Page- 248
    • A. 

      1

    • B. 

      1,2

    • C. 

      2

    • D. 

      None

  • 11. 
    1. Praying mantis and leaf insects camouflage to avoid detection. 2. Mimicry is always defensive. Which of the above is/are true? Page- 248
    • A. 

      1

    • B. 

      2

    • C. 

      1,2

    • D. 

      None

  • 12. 
    1. Mutualism - both are benefitted 2. Commensalism - both harmed 3. Parasitism - one benefited other harmed 4. Competition - both harmed
    • A. 

      1,2

    • B. 

      1,3,4

    • C. 

      1,2,4

    • D. 

      All

  • 13. 
    1. Sea anemone and hermit crab show facultative mutualism. 2. Facultative mutualism is also called protocooperation. Which of the above is/are true about facultative mutualism? Page- 250
    • A. 

      1

    • B. 

      2

    • C. 

      1,2

    • D. 

      None

  • 14. 
    Epiphytes- 1. grow on trees 2. do not harm trees 3. show commensalism 4. example - mosses, ferns, orchids, money-plants Which of the above is/are true about epiphytes? Page- 251
    • A. 

      2,3

    • B. 

      2,3,4

    • C. 

      All

    • D. 

      1,2

  • 15. 
    1. Inter-species competition is more intense than intra-species competition. 2. Parasitism involves food and shelter obtained by a parasite. 3. Ticks, mites and lice are examples of ecto parasites. Which of the above is/are true? Page- 251
    • A. 

      1,2,3

    • B. 

      2,3

    • C. 

      1,3

    • D. 

      1 only

  • 16. 
    Effects of parasites on hosts- 1. shortening of life cycle 2. weakens host 3. reduces reproduction Which of the above is/are true? Page- 252
    • A. 

      1,2

    • B. 

      1 only

    • C. 

      2 only

    • D. 

      1,2,3

  • 17. 
    Link species- 1. outnumber keystone species 2. may provide food for network species 3. act as pollinator and dispersal agents 4. tropical rainforests have high degree of animal dependent pollination and dispersal Which of the above is/are true? Page- 253
    • A. 

      2,3,4

    • B. 

      2,3

    • C. 

      All

    • D. 

      2 only

  • 18. 
    1. Ecotone = transition zone between two communities. 2. Ecotone contains species from both adjoining communities. Which of the above is/are true? Page- 253
    • A. 

      1

    • B. 

      2

    • C. 

      1,2

    • D. 

      None

  • 19. 
    Mangroves- 1. are found in marshy conditions of tropical deltas 2. can excrete salt through salt glands 3. salt glands are on stems Which of the above is/are true? Page- 242
    • A. 

      1,2

    • B. 

      1,2,3

    • C. 

      2,3

    • D. 

      None

  • 20. 
    1. Pneumatophores 2. Prop and stilt roots 3. Vivipary Which of the above are adaptation techniques of wetland species?
    • A. 

      2,3

    • B. 

      2 only

    • C. 

      3 only

    • D. 

      All

  • 21. 
    1. Water hyacinth floats on water due to inflated petioles. 2. Nymphae is an example of emergent and rooted hydrophyte. 3. Emergent hydrophytes have continuous system of air passages. Which of the above is/are true? Page-241
    • A. 

      All

    • B. 

      1,2

    • C. 

      2,3

    • D. 

      2 only

  • 22. 
    Free floating hydrophytes- 1. have well developed roots 2. ex- wolffia, salvinia, hydrilla, ceratophyllum Which of the above is/are true? Page-241
    • A. 

      1

    • B. 

      2

    • C. 

      1,2

    • D. 

      None

  • 23. 
    1. Proline and sorbitol help cope with high salt concentration and osmotic potential. 2. Glycerol also helps tolerate saline condition. Which of the above is/are true? Page-242
    • A. 

      1

    • B. 

      2

    • C. 

      1,2

    • D. 

      None

  • 24. 
    1. Some mangroves exclude salts from roots. 2. Mangroves have high level of organic solutes to help cope with high salt concentration. Which of the above is/are true? Page- 242
    • A. 

      2 only

    • B. 

      1

    • C. 

      1,2

    • D. 

      None

  • 25. 
    • A. 

      All

    • B. 

      1,2,3

    • C. 

      1,2

    • D. 

      1,3,4

  • 26. 
    1. C4 pathway of photosynthesis is found in grass. 2. CAM photosynthesis is one of the adaptation ways in arid area. 3. Succulence is found in hydrophytes. Which of the above is/are true? Page- 241
    • A. 

      1,3

    • B. 

      2,3

    • C. 

      1,2

    • D. 

      1,2,3