Question

Match column I with column II and select the correct option from the given codes.

Column I	Column II
A. Standing state	(i) Fast and nearly perfect
B. Gaseous cycles	(ii) Amount of nutrients present in soil at given time
C. Standing crop	(iii) Slow and less perfect
D. Sedimentary cycles	(iv) Mass of living matter in a unit area

• A. A-(ii), B-(i), C-(iv), D-(iii)
• B. A-(iii), B-(i), C-(iv), D-(ii)
• C. A-(i), B-(iii), C-(ii), D-(iv)
• D. A-(ii), B-(iii), C-(iv), D-(i)

Answer 1

Answer: (A)

A-(ii), B-(i), C-(iv), D-(iii)

Standing state is the amount of inorganic nutrients present anytime in the soil/water of ecosystem. Standing crop is the amount of living matter(or biomass) present in unit area of an ecosystem. Gaseous nutrient cycles are rapid and more perfect as compared to sedimentary nutrient cycles. It is because in gaseous cycles, nutrients remain in circulation more or less uniformly, whereas in sedimentary cycles, nutrients get out of circulation and constitute a relatively inactive, less perfect and immobile reservoir on earth's crust.

So, the correct answer is 'A-(ii), B-(i), C-(iv), D-(iii)'.