Productivity is the rate of production of biomass expressed in terms of 

(i) $\left({\mathrm{kcalm}}^{-3}\right){\mathrm{yr}}^{-1}$
(ii) $g^{-2}y{r}^{-1}$
(iii) $g^{-1}y{r}^{-1}$
(iv) $\left({\mathrm{kcalm}}^{-2}\right){\mathrm{yr}}^{-1}$

Give a reason for each of the following:

The shape of the pyramid of biomass in an aquatic ecosystem is inverted.

The rate of storage of organic matter which is NOT used by the consumer is ______.

The energy which is present in the biomass of plant is known as ________.

Choose the correct statements.

A) The total annul accounts of wet organic matter of the forest can be estimated with the annual net productivity amount of standing forest.
B) Ecosystems also exert direct physical influence that help to moderate regional and local weather.
C) Decline in pollinator activity could mean rising cost of pollination dependent fruits and vegetables.
D) Constanza and his colleagues have tried to put price tag on nature's life support services.