Question

Biogeochemical cycles are of

• A. Two types
• B. Three types
• C. Four types
• D. Five types

Answer 1

The correct option is B Three types

The term biogeochemical cycle is used for exchange or circulation of biogenetic nutrients between living and nonliving components of a biosphere.

The Biogeochemical or nutrient cycle can be-

(A) gaseous cycle in which the materials involved in circulation between living and nonliving components are gases or vapours. E.g., carbon, hydrogen, oxygen.

(B) sedimentary cycles of matter in which the materials involved in circulation between biotic and abiotic components of a biosphere are non-gaseous. E.g., phosphorous, calcium, magnesium.

(C) Hydrological cycle is the cycle where the surface water which gets evaporated due to the heat is returned back to the earth by precipitation through sequential interconvertible reactions.

So, the correct answer is option B.