A tap roots is always

Options

A. `+` Vely geotropic and + vely hydrotropic
B. `+` Vely phototropic and + vely hydrotropic
C. `-` Vely geotropic and + vely hydrotropic
D. `-` Vely hydrotropic and + vely geotropic

Answer

To solve the question regarding the characteristics of a taproot, we can follow these steps:

### Step-by-Step Solution:

1. **Understand the Types of Roots**:
- There are two main types of roots: taproots and fibrous roots. A taproot is characterized by a single, thick primary root that grows deep into the soil.

2. **Define Geotropism**:
- Geotropism refers to a plant's growth response to gravity. Roots typically exhibit positive geotropism, meaning they grow downward towards the gravitational pull.

3. **Define Hydrotropism**:
- Hydrotropism is the growth response of a plant to moisture. Roots tend to grow towards areas with higher moisture content, which is known as positive hydrotropism.

4. **Analyze the Options**:
- The question presents four options regarding the characteristics of a taproot:
- A) Positively Geotropic and Positively Hydrotropic
- B) Positively Phototropic and Positively Hydrotropic
- C) Negatively Geotropic and Positively Hydrotropic
- D) Negatively Hydrotropic and Positively Geotropic

5. **Evaluate Each Option**:
- **Option A**: Positively Geotropic and Positively Hydrotropic - This is correct because taproots grow downwards (positive geotropism) and towards moisture (positive hydrotropism).
- **Option B**: Positively Phototropic and Positively Hydrotropic - This is incorrect; phototropism relates to light, not gravity or moisture.
- **Option C**: Negatively Geotropic and Positively Hydrotropic - This is incorrect; taproots do not grow against gravity.
- **Option D**: Negatively Hydrotropic and Positively Geotropic - This is incorrect; taproots grow towards moisture.

6. **Conclusion**:
- The correct answer is **Option A: Positively Geotropic and Positively Hydrotropic**.