Match the following columns
`{:("Column I","ColumnII"),("a. Cotton seed","I. RQ = 1"),("b. Maize seed","II. RQ"gt1),("c. Cactus seed","III. RQ"lt1),("d. Cow pea seed","IV. RQ"lt1):}`

Options

A. a-III, b-I, c-II, d-Iv
B. a-I, b-III, c-II, d-IV
C. a-IV, b-III, c-II, d-I
D. a-IV, b-I, c-II, d-III

Answer

To solve the matching question regarding the respiratory quotient (RQ) of different seeds, we will analyze each seed type and its corresponding RQ value.

### Step-by-Step Solution:

1. **Understand RQ Values**:
- RQ (Respiratory Quotient) is the ratio of the volume of carbon dioxide produced to the volume of oxygen consumed during respiration.
- RQ values can be categorized as follows:
- RQ = 1: Indicates that carbohydrates are being used as the main respiratory substrate.
- RQ > 1: Indicates that fats are being used, as they produce more CO2 than O2 consumed.
- RQ < 1: Indicates that organic acids or other substrates are being used, which consume more O2 than CO2 produced.

2. **Analyze Cotton Seed**:
- Cotton seeds primarily use fats during germination, which leads to an RQ value of less than 1.
- **Match**: a. Cotton seed → III. RQ < 1

3. **Analyze Maize Seed**:
- Maize seeds typically use carbohydrates for respiration, resulting in an RQ value of 1.
- **Match**: b. Maize seed → I. RQ = 1

4. **Analyze Cactus Seed**:
- Cactus seeds may utilize carbohydrates, but due to incomplete oxidation, they have an RQ value greater than 1.
- **Match**: c. Cactus seed → II. RQ > 1

5. **Analyze Cow Pea Seed**:
- Cow pea seeds also primarily use fats, leading to an RQ value of less than 1.
- **Match**: d. Cow pea seed → IV. RQ < 1

### Final Matches:
- a. Cotton seed → III. RQ < 1
- b. Maize seed → I. RQ = 1
- c. Cactus seed → II. RQ > 1
- d. Cow pea seed → IV. RQ < 1

### Conclusion:
The correct matches are:
1. a - III
2. b - I
3. c - II
4. d - IV