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NEET Biology · Ecosystem · Set 1 (Q1-30)

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  1. 1.
    Which of the following would appear as the pioneer organisms on bare rocks?
    1. (1)Lichens
    2. (2)Liverworts
    3. (3)Mosses
    4. (4)Green algae
  2. 2.
    Eutrophication of water bodies leading to killing of fishes is mainly due to nonavailability of :
    1. (1)oxygen
    2. (2)food
    3. (3)light
    4. (4)essential minerals
  3. 3.
    Select the correct statement from the following :
    1. (1)Activated sludge-sediment in settlement tanks of sewage treatment plant is a rich source of aerobic bacteria
    2. (2)Biogas is produced by the activity of aerobic bacteria on animal waste
    3. (3)Methanobacterium is an aerobic bacterium found in rumen of cattle
    4. (4)Biogas commonly called gobar gas, is pure methane
  4. 4.
    The organization which publishes the Red List of species is :-
    1. (1)ICFRE
    2. (2)IUCN
    3. (3)UNEP
    4. (4)WWF
  5. 5.
    To protect and improve the quality of environment, the Government of India passed the Environment (Protection) Act in the year:
    1. (1)1953
    2. (2)1923
    3. (3)1986
    4. (4)1968
  6. 6.
    Air (Prevention and Control of Pollution) Act was amended in 1987 to include among pollutants
    1. (1)Vehicular exhaust
    2. (2)Allergy causing pollen
    3. (3)Noise
    4. (4)Particulates of size 2.5 micrometer or below
  7. 7.
    The UN conference of Parties on climate change in the year 2012 was held at :
    1. (1)Warsaw
    2. (2)Durban
    3. (3)Doha
    4. (4)Lima
  8. 8.
    Secondary Succession takes place on/in :
    1. (1)Degraded forest
    2. (2)Newly created pond
    3. (3)Newly cooled lava
    4. (4)Bare rock
  9. 9.
    The World Summit on sustainable development held in 2002 in Johannesburg, South Africa pledged for:
    1. (1)A significant reduction in the current rate of biodiversity loss.
    2. (2)Declaration of more biodiversity hotspots.
    3. (3)Increase in agricultural production
    4. (4)Collection and preservation of seeds of different genetic strains of commercially important plants.
  10. 10.
    Which of the following representations shows the pyramid of numbers in a forest ecosystem :-
    1. (1)
    2. (2)
    3. (3)
    4. (4)
  11. 11.
    Secondary productivity is rate of formation of new organic matter by :
    1. (1)Decomposer
    2. (2)Producer
    3. (3)Parasite
    4. (4)Consumer
  12. 12.
    Which of the following is correct for r-selected species?
    1. (1)Small number of progeny with small size
    2. (2)Small number of progeny with large size
    3. (3)Large number of progeny with small size
    4. (4)Large number of progeny with large size
  13. 13.
    How many hot spots of biodiversity in the world have been identified till date by Norman Myers ?
    1. (1)34
    2. (2)43
    3. (3)17
    4. (4)25
  14. 14.
    In the equation GPP–R = NPP R represents :
    1. (1)Radiant energy
    2. (2)Retardation factor
    3. (3)Environment factor
    4. (4)Respiration losses
  15. 15.
    Inspite of interspecific competition in nature, which mechanism the competing species might have evolved for their survival?
    1. (1)Resource partitioning
    2. (2)Competitive release
    3. (3)Mutualism
    4. (4)Predation
  16. 16.
    Of the total incident solar radiation the proportion of PAR is :-
    1. (1)About 70%
    2. (2)About 60%
    3. (3)Less than 50%
    4. (4)More than 80%
  17. 17.
    Tiger is not a resident in which one of the following national park?
    1. (1)Jim Corbett
    2. (2)Ranthambhor
    3. (3)Sunderbans
    4. (4)Gir
  18. 18.
    Between which among the following, the relationship is not an example of commensalism?
    1. (1)Orchid and the tree on which it grows
    2. (2)Cattle Egret and grazing cattle
    3. (3)Sea Anemone and Clown fish
    4. (4)Female wasp and fig species
  19. 19.
    Which one of the following is not a functional unit of an ecosystem?
    1. (1)Energy flow
    2. (2)Decomposition
    3. (3)Productivity
    4. (4)Stratification
  20. 20.
    In relation to Gross primary productivity and Net primary productivity of an ecosystem, which one of the following statements is correct?
    1. (1)There is no relationship between Gross primary productivity and Net primary productivity.
    2. (2)Gross primary productivity is always less than net primary productivity.
    3. (3)Gross primary productivity is always more than net primary productivity.
    4. (4)Gross primary productivity and Net primary productivity are one and same.
  21. 21.
    Which of the following statements is incorrect?
    1. (1)Biomass decreases from first to fourth trophic level
    2. (2)Energy content gradually increases from first to fourth trophic level
    3. (3)Number of individuals decreases from first trophic level to fourth trophic level
    4. (4)Energy content gradually decreases from first to fourth trophic level
  22. 22.
    Secondary productivity is the rate of formation of none organic matter by
    1. (1)Producer
    2. (2)Parasite
    3. (3)Consumer
    4. (4)Decomposer
  23. 23.
    The pioneer species in a hydrarch succession are :
    1. (1)Free-floating angiosperms
    2. (2)Submerged rooted plants
    3. (3)Phytoplanktons
    4. (4)Filamentous algae
  24. 24.
    Which one of the following is categorized as a parasite in true sense ?
    1. (1)The female Antopheles bites and sucks blood from humans.
    2. (2)Human foetus developing inside the uterus draws nourishment from the mother.
    3. (3)Head louse living on the human scalp as well as laying eggs on human hair.
    4. (4)The cuckoo (koel) lays its eggs in crow's nest.
  25. 25.
    Identify the possible link "A" in the following food chain : Plant → Insect → Frog → "A" → Eagle
    1. (1)Cobra
    2. (2)Parrot
    3. (3)Rabbit
    4. (4)Wolf
  26. 26.
    A sedentary sea anemone gets attached to the shell lining of hermit crab. The association is :
    1. (1)Amensalism
    2. (2)Ectoparasitism
    3. (3)Symboisis
    4. (4)Commensalism
  27. 27.
    Give the correct descending order of organisms with reference to their estimated number found in Amazon forest.
    (i) Plants
    (ii) Invertebrates
    (iii) Fishes
    (iv) Mammals
    (v) Birds
    Choose the correct answer from the options given below :
    1. (1)(i) > (ii) > (v) > (iv) > (iii)
    2. (2)(i) > (iii) > (iv) > (ii) > (v)
    3. (3)(ii) > (i) > (v) > (iv) > (iii)
    4. (4)(ii) > (i) > (iii) > (v) > (iv)
  28. 28.
    The primary producers of the deep-sea hydrothermal vent ecosystem are :
    1. (1)Blue-green algae
    2. (2)Coral reefs
    3. (3)Green algae
    4. (4)Chemosynthetic bacteria
  29. 29.
    In which of the following both pairs have correct combination?
    1. (1)Gaseous nutrient cycle
      Sulphur and
      Phosphorus

      Sedimentary nutrient cycle
      Carbon and Nitrogen
    2. (2)Gaseous nutrient cycle
      Carbon and Nitrogen

      Sedimentary nutrient cycle
      Sulphur and
      Phosphorus
    3. (3)Gaseous nutrient cycle
      Carbon and sulphur

      Sedimentary nutrient cycle
      Nitrogen and
      phosphorus
    4. (4)Gaseous nutrient cycle
      Nitrogen and sulphur

      Sedimentary nutrient cycle
      Carbon and
      Phosphorus
  30. 30.
    Which of the following is a characteristic feature of cropland ecosystem?
    1. (1)Absence of soil organisms
    2. (2)Least genetic diversity
    3. (3)Absence of weeds
    4. (4)Ecological succession