Read the given statements and identify the plant hormones X,Y and Z.
(i) Hormone Y induces flowering in mango and also promotes rapid internode/petiole elongation in deep water rice plants and hence helping leaves or upper part of shoot to remain above water.
(ii) Hormone X promotes root growth and root hair formation.
(iii) Hormone Z inhibits the seed germination, increases the tolerance of plant to various stresses, play important role in seed development, maturation and dormancy.

Options

A. `Y-ABA, X-"Auxin", Z-GA`
B. `Y-C_(2)H_(4)X - "Auxin", Z - GA`
C. `Y-"Auxin", X-C_(2)H_(4),Z - GA`
D. `Y-C_(2)H_(4),X - C_(2)H_(4),Z - ABA`

Answer

To identify the plant hormones X, Y, and Z based on the given statements, we can analyze each statement step by step.

### Step 1: Analyze Statement (i)
- **Statement**: Hormone Y induces flowering in mango and promotes rapid internode/petiole elongation in deep water rice plants, helping leaves or the upper part of the shoot to remain above water.
- **Analysis**: The hormone that is known for inducing flowering and promoting internode elongation is **ethylene**. Ethylene plays a crucial role in the flowering of certain plants and is also involved in the elongation of stems in response to flooding conditions.

### Step 2: Identify Hormone Y
- **Conclusion**: Based on the analysis of Statement (i), we can conclude that **Hormone Y is Ethylene**.

### Step 3: Analyze Statement (ii)
- **Statement**: Hormone X promotes root growth and root hair formation.
- **Analysis**: The hormone primarily responsible for promoting root growth and root hair formation is **Auxin**. Auxins are known to stimulate the elongation of root cells and promote the development of root hairs.

### Step 4: Identify Hormone X
- **Conclusion**: Based on the analysis of Statement (ii), we can conclude that **Hormone X is Auxin**.

### Step 5: Analyze Statement (iii)
- **Statement**: Hormone Z inhibits seed germination, increases the tolerance of plants to various stresses, and plays an important role in seed development, maturation, and dormancy.
- **Analysis**: The hormone that inhibits seed germination and is involved in seed dormancy is **Abscisic Acid (ABA)**. ABA is known for its role in stress responses and maintaining seed dormancy.

### Step 6: Identify Hormone Z
- **Conclusion**: Based on the analysis of Statement (iii), we can conclude that **Hormone Z is Abscisic Acid (ABA)**.

### Final Summary
- **Hormone X**: Auxin
- **Hormone Y**: Ethylene
- **Hormone Z**: Abscisic Acid (ABA)