Which of the following is the unit of productivity of an Ecosystem?

Given below are twol statements
Statement I : In ecosystem, there is unidirectional flow of energy of sun from producers to consumers.
Statement II : Ecosystems are exempted from 2nd law of thermodynamics.
In the light of the above statements, choose the most appropriate answer from the options given below :

Given below are two statements:
Statement I : The primary source of energy in an ecosystem is solar energy.
Statement Il: The rate of production of organic matter during photosynthesis in an ecosystem is called net primary productivity (NPP).
In the light of the above statements, choose the most appropriate answer from the options given below :

In an ecosystem if the Net Primary Productivity (NPP) of first trophic level is 100x(kcal m^-2)yr^-1, what would be the GPP (Gross Primary Productivity) of the third trophic level of the same ecosystem?

Identify the correct statements:
A. Detrivores perform fragmentation.
B. The humus is further degraded by some microbes during mineralization.
C. Water soluble inorganic nutrients go down into the soil and get precipitated by a process called leaching.
D. The detritus food chain begins with living organisms.
E. Earthworms break down detritus into smaller particles by a process called catabolism.
Choose the correct answer from the option given below :

In the equation
GPP-R= NPP
GPP is Gross Primary Productivity
NPP is Net Primary Productivity
R here is

Given below are two statements:
Statement I : Gause's 'Competitive Exclusion Principle' states that two closely related species competing for the same resources cannot co-exist indefinitely and competitively inferior one will be eliminated eventually.
Statement II : In general, carnivores are more adversely affected by competition than herbivores.
In the light of the above statements, choose the correct answer from the options given below:

Match List I with List II:

Choose the correct answer from the options given below:

Match List I with List II.

Choose the correct answer from the options given below:

Detritivores breakdown detritus into smaller particles. This process is called:

Given below are two statements:
Statement I : Decomposition is a process in which the detritus is degraded into simpler substances by microbes.
Statement II: Decomposition is faster if the detritus is rich in lignin and chitin.
In the light of the above statements, choose the correct answer from the options given below

Match List-I with List-II.

Choose the correct answer from the options given below.

The amount of nutrients, such as carbon, nitrogen, phosphorus and calcium present in the soil at any given time, is referred as:

In the equation GPP-R= NPP R represents:

Which of the following statements is not correct?

Match the trophic levels with their correct speciesexamples in grassland ecosystem.

Select the correct option:

In relation to Gross primary productivity and Net primary productivity of an ecosystem, which one of the following statements is correct?

Thiobacillusis a group of bacteria helpful in carrying out

Which of the following ecological pyramids is generally inverted ?

What type of ecological pyramid would be obtained with the following data ?
Secondary consumer : 120 g
Primary consumer : 60 g Primary producer : 10 g

Mycorrhizae are the example of

Which ecosystem has the maximum biomass ?

Alexander Von Humboldt described for the first time

Which one of the following is a characteristic feature of cropland ecosystem ?

Which of the following would appear as the pioneer organisms on bare rocks ?

The term ecosystem was coined by