Q2 of 67 Page 98

The process of mineralisation by microorganisms helps in the release of:

Mineralization is defined as the process by which humus is degraded further by the action of the microbes, this leads to the release of inorganic nutrients from humus. The other options are incorrect as mineralization by microorganisms only helps in the release of inorganic humus.

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1

Decomposers like fungi and bacteria are:

i. autotrophs


ii. heterotrophs


iii. saprotrophs


iv. chemo-autotrophs.


Choose the correct answer:


 3

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

i. (kcal m–3) yr–1


ii. g–2 yr–1


iii. g–1 yr–1


iv. (kcal m–2) yr–1


 4

An inverted pyramid of biomass can be found in which ecosystem?

 5

Which of the following is not a producer?