Which of the following is another name given to nutrient cycling?

The correct answer is Option (3) → Biogeochemical Cycle

Option (3) Biogeochemical Cycle — Correct. Nutrient cycling is also called the biogeochemical cycle: the name joins bio (living organisms) with geo (rocks, air and water), the parts through which the nutrients move.

Note: This question is from the topic “Nutrient Cycling” in Chapter 14, Ecosystem, of the pre-rationalised NCERT book. This portion is not in the present NCERT book, where the chapter is now Chapter 12, Ecosystem. The extract below is from the pre-rationalised edition.

NCERT Extract (Pre-rationalised edition, Chapter 14, Ecosystem):
Nutrient Cycling – “What is important is to appreciate that nutrients which are never lost from the ecosystems, rather they are recycled time and again indefinitely. The movement of nutrient elements through the various components of an ecosystem is called nutrient cycling. Another name of nutrient cycling is biogeochemical cycles (bio: living organism, geo: rocks, air, water).”