Select the correct statements.
(i) Between temperature range `0 - 25^(@)C`, rate of respiration doubles for every `10^(@)C` rise in temperature.
(ii) Cytochromes are iron-porphyrin compounds.
(iii) Respiratory rate of wounded or injured plant parts generally decreases.

Options

A. (i) and (ii)
B. (ii) and (iii)
C. (i) and (iii)
D. (i) , (ii) and (iii)

Answer

To solve the question, we need to evaluate each of the provided statements regarding respiration and related biological concepts.

### Step-by-Step Solution:

1. **Evaluate Statement (i)**:
- The statement claims that between the temperature range of `0 - 25°C`, the rate of respiration doubles for every `10°C` rise in temperature.
- This is a reference to the Q10 temperature coefficient, which indicates how the rate of a biological process changes with temperature. A Q10 value of 2 means that for every 10°C increase in temperature, the rate of respiration indeed doubles.
- **Conclusion**: This statement is **correct**.

2. **Evaluate Statement (ii)**:
- The statement asserts that cytochromes are iron-porphyrin compounds.
- Cytochromes are indeed proteins that contain a heme group, which is an iron-containing porphyrin. The structure of porphyrin includes a central iron atom surrounded by a ring of carbon and nitrogen atoms.
- **Conclusion**: This statement is **correct**.

3. **Evaluate Statement (iii)**:
- The statement claims that the respiratory rate of wounded or injured plant parts generally decreases.
- In reality, when plant parts are wounded or injured, the respiration rate typically increases due to the production of growth hormones and the need for energy to repair tissues. This increase is associated with processes like callus formation.
- **Conclusion**: This statement is **incorrect**.

### Final Answer:
The correct statements are (i) and (ii). Therefore, the answer is that the correct options are the first and second statements.