A. 1%
B. 2%
C. 10%
D. 20%
Correct Answer: 10% ✔
Last Updated: May 16, 2024
Related MCQs
- Ecosystem receives nitrogen from outside through:
- If we completely remove the decomposers from an ecosystem, its functioning will be adversely affected because:
- Mark the incorrect statement with reference to carbon cycle:
- The sulphate rocks are formed in ocean by leaching of:
- Hydrological cycle is under the control of:
- The maximum amount of CO2 fixed by green plants by way of photosynthesis in a year is:
- According to Odum the light absorbed by the plant cover in terms of kcal/m2/day is:
- The SO2 is returned to the atmosphere by:
- Which of the following serves as source of carbon in plants:
- Mark the correct statement with reference to phosphorous cycle:
- Which ecological cycle is directly driven by sunlight?
- Sulphur is returned to the soil by:
- The percentage of water bound in lithosphere and sedimentary rocks is:
- The rate of storage at consumer level is:
- According to Lindemann, the percentage of net production passed on to carnivores is:
- In a sugarcane field the net productivity in terms of kg/m2/year, is:
- In a forest ecosystem, the numerical relationship between the producers and herbivores:
- The gross production minus losses in an ecosystem is indicated as:
- The term homeostasis in an ecosystem refers to:
- The term omnivore is applied to:
- The solar radiations are the sole source of:
- The pyramid of biomass in a parasitic ecosystem is:
- The ecological pyramids were first designed by:
- An ecosystem is a structure that is:
- Which of the following belong to the same trophic level?
- According to Lindemann, the total solar input in terms of gcal/cm2/year is:
- The efficiency of primary production in an ocean is:
- From gross production of autotrophs, according to Lindemann, how much energy in gcal/cm2/year is used in respiration and decomposition respectively:
- The pyramid of biomass in a forest ecosystem is:
- The cybernetics of an ecosystem refers to:
- The flow of materials and energy in an ecosystem is respectively:
- The biotic and abiotic components of the ecosystem are connected through:
- The pyramid of biomass in a shallow pond ecosystem is:
- The taiga ecosystems lie in the:
- The pyramid of number in a forest ecosystem is:
- In a parasitic food chain which trophic level is represented by bugs and lices?
- Which of the following is the smallest unit?
- In a stabilized ecosystem the P/R ratio is:
- According to Odum, the percentage of net primary production of total light intake is:
- The ration of food energy assimilated to the food energy ingested is called:
- The ecosystem lying in the alpine zone between taiga and polar ice is called:
- The primary consumers are described as:
- The percentage of light energy utilized for photosynthesis by higher plants is:
- The term reducer is applied to:
- Which of the following terms is not a synonym literally for ecosystem?
- A man is the part of biotic community:
- Plants constitute the:
- The ecosystem exists in a state of ‘balance’. Supposing one of the heterotrophs, says the rabbit, multiplies and increases in number suddenly then:
- The pyramid of biomass is variable in some:
- The source of energy in an ecosystem is:
- Every ecosystem must have a continuous external source of: