Following are examples of terrestrial ecosystem except:
[C] Grassland [D] Desert
Which of these are examples of aquatic ecosystem?
[C] Estuary [D] All
Which of these are examples of man-made ecosystem?
[A] Crop field
[C] Wetland [D] Both (a) and (b)
Find the incorrect statement.
[A] Biosphere is a global ecosystem.
[B] Transfer of energy in ecosystem explains in terms of food web and nutrient cycle.
[C] Pond, lake and wetland are aquatic ecosystems. [D] Ecosystem is structural not functional unit of ecosystem.
Which of the following occupy top vertical strata of forest ecosystem?
[B] Herbs and grasses
[C] Tree [D] Phytoplankton
Pond is a:
[A] Shallow fresh water body
[B] Deep fresh water body
[C] Shallow marine water body [D] Deep marine water body
Functional aspect of ecosystem can be explained in terms of:
[B] Decomposition and energy flow
[C] Nutrient cycle [D] All of the above
At the bottom of ponds decomposers found are:
[C] Flagellates [D] All of these
Which of the following have only unidirectional flow?
[C] Energy [D] Sulphur
The amount of biomass or organic matter produced per unit area over a period of time by plants during photosynthesis is known as:
[A] Primary production
[B] Secondary production
[C] Net primary production [D] Net secondary production
Unit of primary production is:
[C] Both (a) and (b) [D] None of these
NPP is equal to:
[A] GPP + R
[C] GPP x R [D] GPP +- R
Secondary productivity means:
[A] Rate of formation of organic matter by producer
[B] Rate of formation of new organic matter by consumers
[C] Rate of formation of inorganic matter by producer [D] Rate of formation of inorganic matter by consumers
Primary productivity depends on which of the following factors?
[A] Environmental factor
[B] Photosynthetic capacity of plant
[C] Availability of nutrients [D] All of the above
[A] Gross Public Partnership
[B] Gross Primary Production
[C] Gross Producer Production [D] Gross plant production