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MCQs

Total Questions : 619 | Page 5 of 62 pages
Question 41. The phytoplankton's manufacture their food by the process of
  1.    Eutrophication
  2.    Photosynthesis
  3.    Infiltration
  4.    Photosynthesis
 Discuss Question
Answer: Option D. -> Photosynthesis
Answer: (d).Photosynthesis
Question 42. Organism at the bottom of food chain are
  1.    Numerous
  2.    Very small number
  3.    Negligible
  4.    Very few
 Discuss Question
Answer: Option A. -> Numerous
Answer: (a).Numerous
Question 43. Animals at the top of food chain are
  1.    Often small and Few in numbers
  2.    Often large and Few in numbers
  3.    Large in numbers
  4.    Large animals
 Discuss Question
Answer: Option B. -> Often large and Few in numbers
Answer: (b).Often large and Few in numbers
Question 44. Why at the bottom of all the food chain is pland, both on land andin water?
  1.    Because they are green
  2.    Because they are the sole producers
  3.    Numerous in number
  4.    All of these
 Discuss Question
Answer: Option B. -> Because they are the sole producers
Answer: (b).Because they are the sole producers
Question 45. In which environmental there are very small number of species are surviving?
  1.    Tropical
  2.    Cold Arctic
  3.    Savanna
  4.    Pacific
 Discuss Question
Answer: Option B. -> Cold Arctic
Answer: (b).Cold Arctic
Question 46. The marine life has been exploited by
  1.    Humans
  2.    Animals
  3.    Pollution
  4.    All of these
 Discuss Question
Answer: Option A. -> Humans
Answer: (a).Humans
Question 47. Why are fish stocks more plentiful on the continental shelf's?
  1.    Due to rich souces of nutrients
  2.    Due to high penetration of Sunlight
  3.    Both a and b
  4.    None of these
 Discuss Question
Answer: Option C. -> Both a and b
Answer: (c).Both a and b
Question 48. Which countries at the shallow areas of water extract oil and natural gas?
  1.    Gulf of Middle East
  2.    Gulf of Mexico
  3.    North Sea
  4.    All of these
 Discuss Question
Answer: Option D. -> All of these
Answer: (d).All of these
Question 49. The growth rate of vegetation measured by the increase in the biome over the year is known as
  1.    Productivity
  2.    Primary Productivity
  3.    Net Primary Productivity
  4.    Secondary Productivity
 Discuss Question
Answer: Option C. -> Net Primary Productivity
Answer: (c).Net Primary Productivity
Question 50. Which resource of ocean is very important for humans?
  1.    Fishes
  2.    Water
  3.    Planktons
  4.    All of these
 Discuss Question
Answer: Option A. -> Fishes
Answer: (a).Fishes

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