Ecosystem Structure And Functions(Environment Management ) Questions and Answers

Question 1. Transfer of energy from source of plants through a series of organism is known as ________________
  1.    Food web
  2.    Energy cycle
  3.    Food chain
  4.    Biological system
Explanation:-
Answer: Option C. -> Food chain
Answer: (c).Food chain
Question 2. Which one of the following is not a gaseous biogeochemical cycle in an ecosystem?
  1.    Carbon cycle
  2.    Phosphorous cycle
  3.    Sulfur cycle
  4.    Nitrogen cycle
Explanation:-
Answer: Option B. -> Phosphorous cycle
Answer: (b).Phosphorous cycle
Question 3. An ecosystem which can be easily damaged but can recovered after some time if damaging effect stops will be having ____________________
  1.    High stability and high resilience
  2.    High stability and low resilience
  3.    Low stability and low resilience
  4.    Low stability and high resilience
Explanation:-
Answer: Option D. -> Low stability and high resilience
Answer: (d).Low stability and high resilience
Question 4. Pyramids of number in grassland ecosystem are inverted.
  1.    True
  2.    False
  3.    May be True or False
  4.    Can't say
Explanation:-
Answer: Option B. -> False
Answer: (b).False
Question 5. The type of ecosystem with the highest mean plant productivity is _______________
  1.    Tundra
  2.    Temperate grassland
  3.    Desert
  4.    Tropical rain forest
Explanation:-
Answer: Option D. -> Tropical rain forest
Answer: (d).Tropical rain forest
Question 6. The phytoplankton's synthesis their food through the process of
  1.    photosynthesis
  2.    Precipitation
  3.    Eutrophication
  4.    All of these
Explanation:-
Answer: Option A. -> photosynthesis
Answer: (a).photosynthesis
Question 7. Any stable community must be made of species which have different needs for
  1.    Resources
  2.    Population
  3.    Habitat
  4.    Niche
Explanation:-
Answer: Option A. -> Resources
Answer: (a).Resources
Question 8. Annual limits are set for the amounts and types of fish that can be caught
  1.    Areas
  2.    Regions
  3.    Quotas
  4.    Coastal Areas
Explanation:-
Answer: Option C. -> Quotas
Answer: (c).Quotas
Question 9. Limits on net size and types are
  1.    Young fish can swim through the net
  2.    Time to grow to maturity
  3.    Time for reproduction
  4.    All of these
Explanation:-
Answer: Option D. -> All of these
Answer: (d).All of these
Question 10. Marine ecosystem is divided into
  1.    9 Tropic Levels
  2.    5 Tropic Levels
  3.    2 Trphic Levels
  4.    4 Tropic Levels
Explanation:-
Answer: Option D. -> 4 Tropic Levels
Answer: (d).4 Tropic Levels
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