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Hydrological cycle is under the control of:
Related MCQs
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:
The amount of living matter present in a component population of a particular trophic level is called:
The trophic structure in an ecosystem is in fact:
The river mouth ecosystem is called:
A biotic community comprises:
Food chains are met with only in the:
Hydrological cycle is under the control of:
A. Grasslands
B. Forests
C. Planktons
D. Epiphytes
Correct Answer:
Forests
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Last Updated:
May 16, 2024