Give an account of energy flow in an ecosystem
Give an account of energy flow in an ecosystem
Energy enters an ecosystem from the Sun. Solar radiations pass through the atmosphere and are absorbed by the Earth's surface. These radiations help plants in carrying out the process of photosynthesis. Also, they help maintain the Earth's temperature for the survival of living organisms. Some solar radiations are reflected by the Earth's surface. Only $2-10$ percent of solar energy is captured by green plants (producers) during photosynthesis to be converted into food. The rate at which the biomass is produced by plants during photosynthesis is termed as gross primary productivity'. When these green plants are consumed by herbivores, only $10 \%$ of the stored energy from producers is transferred to herbivores. The remaining $90 \%$ of this energy is used by plants for various processes such as respiration, growth, and reproduction. Similarly, only $10 \%$ of the energy of herbivores is transferred to carnivores. This is known as ten percent law of energy flow. (figure)
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Which one of the following system constitutes the primary producers
Which one of the following system constitutes the primary producers
The bacteria that attack dead organic matter are
The bacteria that attack dead organic matter are
In the following, there is no difference.
In the following, there is no difference.
Consider the following four statements $(A-D)$ and select the correct option stating which ones are true $(T)$ and
which ones are false $(F)$.
Statements :
$(A)$ Vertical distribution of different species occupying different levels in a community is called stratification.
$(B)$ Net primary productivity minus respiration losses is the gross primary productivity.
$(C)$ Rate of biomass production is called decomposition
$(D)$ Annual net primary productivity of oceans is $55$ billion tons
(A)
(B)
(C)
(D)
Consider the following four statements $(A-D)$ and select the correct option stating which ones are true $(T)$ and
which ones are false $(F)$.
Statements :
$(A)$ Vertical distribution of different species occupying different levels in a community is called stratification.
$(B)$ Net primary productivity minus respiration losses is the gross primary productivity.
$(C)$ Rate of biomass production is called decomposition
$(D)$ Annual net primary productivity of oceans is $55$ billion tons
| (A) | (B) | (C) | (D) |