A. Carbon
B. Potassium
C. Nitrogen
D. Free energy
Related Mcqs:
- In a comparative study of grassland ecosystem and pond ecosystem it may be observed that:
A. Primary and secondary consumers are similar
B. Both biotic and abiotic components are different
C. The biotic components are almost similar
D. The abiotic components are almost similar - Exotic species, which brought for plantation from some other country to our country or even from one ecosystem to other ecosystem are called, as exotic species like:
A. Pinus nigra – Japan
B. Euralyptus – Australia
C. Polunia – China
D. All of the above - The kinds of measurements in forest mensuration:
A. Cut/felled material
B. Individual trees
C. Crop or stand
D. Standing tree
E. All of the above - The flow of materials and energy in an ecosystem is respectively:
A. Cyclic only
B. Cyclic and linear
C. Linear and cyclic
D. Linear only - Which of the following characterizes the biomass in an ecosystem?
A. The biomass of producers is less than the combined biomass of consumers and decomposers
B. No general statement can be made about relative biomass of different ecological groups
C. The biomass of secondary consumers is usually greater than the biomass of primary consumers
D. The biomass of producers is generally greater than the biomass of primary consumers - The gross primary production is maximum in the following ecosystem:
A. Open sea
B. Grasslands and pastures
C. Coniferous forests
D. Tropical and sub-tropical forest - Which of the following terms is not a synonym literally for ecosystem?
A. Ectosome
B. Ecosphere
C. Microcosm
D. Holocene - Which of the following ecosystem has highest gross primary productivity:
A. Grassland
B. Coral reefs
C. Mangroves
D. Rain forest - Which of the following is an artificial ecosystem?
A. Rice-field
B. Forest
C. Grassland
D. Lake - Which of the following is expected to have the highest value (gm/m2/yr) in a grassland ecosystem?
A. Tertiary Production
B. Gross Production (GP)
C. Net Production (NP)
D. Secondary Production
