Read the given statements and select the option that correctly identifies the incorrect ones.
(i) Cytokinin is primarily concerned with cell division.
(ii) `C_(2)H_(4)` breaks seed and bud dormancy
(iii) ABA stimulates the opening of stomata.
(iv) `C_(2)H_(4)` initiates germination in peanut seeds, sprouting of potato tubers.
(v) ABA is synergistic to GA.

Options

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

Explanation

To solve the question, we need to evaluate each statement regarding plant hormones and identify which ones are incorrect. Let’s analyze each statement step by step.

### Step 1: Evaluate Statement (i)
**Statement (i): Cytokinin is primarily concerned with cell division.**
- **Evaluation**: This statement is correct. Cytokinins are plant hormones that promote cell division and are involved in various plant growth processes.

### Step 2: Evaluate Statement (ii)
**Statement (ii): C₂H₄ breaks seed and bud dormancy.**
- **Evaluation**: This statement is also correct. Ethylene (C₂H₄) is known to promote the breaking of dormancy in seeds and buds.

### Step 3: Evaluate Statement (iii)
**Statement (iii): ABA stimulates the opening of stomata.**
- **Evaluation**: This statement is incorrect. Abscisic acid (ABA) actually causes the closure of stomata, particularly during stress conditions like drought, to prevent water loss.

### Step 4: Evaluate Statement (iv)
**Statement (iv): C₂H₄ initiates germination in peanut seeds, sprouting of potato tubers.**
- **Evaluation**: This statement is correct. Ethylene plays a role in promoting germination and sprouting in various plants, including peanuts and potatoes.

### Step 5: Evaluate Statement (v)
**Statement (v): ABA is synergistic to GA.**
- **Evaluation**: This statement is incorrect. Abscisic acid (ABA) and gibberellic acid (GA) have opposing effects; ABA promotes dormancy and inhibits growth, while GA promotes growth and germination. Therefore, they are antagonistic rather than synergistic.

### Conclusion
The incorrect statements are:
- Statement (iii): ABA stimulates the opening of stomata. (Incorrect)
- Statement (v): ABA is synergistic to GA. (Incorrect)

### Final Answer
The option that correctly identifies the incorrect statements is option number 3, which includes statements (iii) and (v).

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