The amount of nutrients such as carbon, nitrogen, potassium and calcium present in the soil at any given time is referred to as :
Answer: (C) Standing state. Answer: (C) The amount of nutrients (carbon, nitrogen, potassium, calcium) present in the soil at any given time is termed the standing state, option (c).
- A.Humus
- B.Detritus
- C.Standing state✓
- D.Standing crop
Correct Answer
(C) Standing state
Solution & Explanation
Answer: (C) The amount of nutrients (carbon, nitrogen, potassium, calcium) present in the soil at any given time is termed the standing state, option (c). The distractor standing crop (d) is the mass of living organisms (biomass) at a trophic level - a living-biomass quantity, not a soil-nutrient pool. Humus and detritus are organic decomposition materials, not the nutrient-pool definition. (Standing-state belongs to the rationalised nutrient-cycling section; the contrasting standing-crop definition is the closest in-reprint support.) NCERT Reference: Ch 12, p.211 — “time called as the standing crop. The standing crop is measured as the”