Mathc column I with column II and select the correct option from the given codes.
`{:("Column I","Column II"),("Standing state",(i)"Fast and nearly perfect"),("Gaseous cycles",(ii)"Amount of nutrients present in soil at given time"),("Standing crop",(iii)"Slow and less perfect"),("Sedimentary cycles",(iv)"Mass of living matter in a unit area"):}`

Options

A. ii,I,iv,iii
B. iii,I,iv,ii
C. I,iii,ii,iv
D. ii,iii,iv,i

Answer

To solve the problem of matching Column I with Column II, we will analyze each term in Column I and find its corresponding definition or description in Column II.

### Step-by-Step Solution:

1. **Identify the first term: "Standing state"**
- The standing state refers to the amount of inorganic nutrients present in the soil or water at any given time.
- **Match:** Standing state → (ii) "Amount of nutrients present in soil at given time"

2. **Identify the second term: "Gaseous cycles"**
- Gaseous cycles are characterized by being fast and nearly perfect due to the continuous circulation of nutrients.
- **Match:** Gaseous cycles → (i) "Fast and nearly perfect"

3. **Identify the third term: "Standing crop"**
- Standing crop refers to the mass of living matter present in a unit area of an ecosystem.
- **Match:** Standing crop → (iv) "Mass of living matter in a unit area"

4. **Identify the fourth term: "Sedimentary cycles"**
- Sedimentary cycles are slower and less perfect because nutrients can get out of circulation.
- **Match:** Sedimentary cycles → (iii) "Slow and less perfect"

### Final Matches:
- Standing state → (ii) "Amount of nutrients present in soil at given time"
- Gaseous cycles → (i) "Fast and nearly perfect"
- Standing crop → (iv) "Mass of living matter in a unit area"
- Sedimentary cycles → (iii) "Slow and less perfect"

### Summary of Matches:
- (i) Gaseous cycles → Fast and nearly perfect
- (ii) Standing state → Amount of nutrients present in soil at given time
- (iii) Sedimentary cycles → Slow and less perfect
- (iv) Standing crop → Mass of living matter in a unit area

### Selected Option:
Based on the analysis, the correct option is **A**.

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