1. 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?

(1).\(10x\left(kcal m^{-2}\right)yr^{-1}\)

(2). \(\displaystyle \frac{100x}{3x}\left(kcal m^{-2}\right)yr^{-1}\)

(3). \(\displaystyle \frac{x}{10}\left(kcal m^{-2}\right)yr^{-1}\)

(4). \(x\left(kcal m^{-2}\right)yr^{-1}\)

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

(1).(I) (KCal m^-2)yr^-1

(2). gm^-2

(3). KCal m^-2

(4). KCal m^-3

3. 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 :

(1).Statement I is incorrect but statement II is correct

(2). Both statement I and statement II are correct

(3). Both statement I and statement II are incorrect

(4). Statement I is correct but statement II is incorrect

4. 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 :

(1).Statement I is incorrect but statement Il is correct

(2). Both statement I and statement Il are correct

(3). Both statement I and statement Il are incorrect

(4). Statement I is correct but statement Il is incorrect