Question

Secondary productivity is
A. Conversion of physical energy into chemical energy at producer level
B. Conversion of physical energy into chemical energy at consumer level
C. The rate of energy storage at consumer level
D. The decomposition of organic matter by decomposers

Answer 1

Secondary productivity is the production of biomass of heterotrophic bions in a system. This is made by the transference of organic matter among trophic levels and describes the amount of new tissue formed by the application of digested food.

Complete Answer:
Before we find out the correct option let us know a little about productivity. In ecology, the word productivity leads to the rate of production of biomass in an ecosystem, normally shown in sections of mass per unit of time, such as grams per square metre per day. The unit of volume can compare to dry material or to the size of the generated carbon.

Option A: Conversion of physical energy into chemical energy at producer level is known as photosynthesis. It is an example of primary productivity and not secondary productivity, therefore, this is the incorrect option.

Option B: Conversion of physical energy into chemical energy does not occur at consumer level, therefore, this is the incorrect option.

Option C: Secondary productivity is the speed at which the consumers change the chemical reaction of their feed into their biomass termed secondary productivity. The capability at which strength is given from one trophic level to another is termed ecological efficiency. In common it is determined that there is only a 10 percent shift of energy. Therefore this is the correct answer.

Option D: The decomposition of organic matter by decomposers comes under tertiary productivity. Therefore, this is the incorrect option.

Thus, the correct option is C) The rate of energy storage at consumer level.

Note: Secondary productivity is the speed of biomass productivity or energy stability by heterotrophic bions, such as hunters and microbes. These obtain all their energy from photosynthetic and other autotrophs plants, unless directly or indirectly, and their potency defines the whole of trophic levels and the limits of the food chains inside an ecosystem - both of which are expected to be improved by greater secondary productivity.