Which of the following groups of plants are propagated through underground root

Options

A. Bryphyllum and Kalanchoe
B. Pistia, Chrysanthemum and Pineapple
C. Ginger , Potato, Onion, Zamikand
D. Sweet Potato, Asparagus, Tapioca and Dahlia

Answer

To determine which group of plants is propagated through underground roots, we need to analyze the options provided and identify the methods of propagation for each plant mentioned.

### Step-by-Step Solution:

1. **Understand Vegetative Propagation**:
- Vegetative propagation is a form of asexual reproduction where new plants develop from non-reproductive parts of the parent plant, such as roots, stems, or leaves.

2. **Evaluate Each Option**:
- **Option 1: Bryophyllum and Calicogne**:
- Bryophyllum reproduces through leaves (leaf propagation).
- Calicogne (likely referring to Calathea) propagates through stem cuttings.
- **Conclusion**: This option does not involve underground roots.

- **Option 2: Pistea, Chrysanthemum, and Pineapple**:
- Pistea (likely referring to Pista) propagates through suckers (aerial stems).
- Chrysanthemum propagates through stem cuttings.
- Pineapple propagates through the crown (aerial part).
- **Conclusion**: This option does not involve underground roots.

- **Option 3: Ginger, Potato, Onion, and Zamekant**:
- Ginger is an underground stem (rhizome).
- Potato is also an underground stem (tuber).
- Onion is a bulb (modified underground stem).
- Zamekant (Amorphophallus) reproduces through corms (another type of underground stem).
- **Conclusion**: This option primarily involves underground stems, not roots.

- **Option 4: Sweet Potato, Asparagus, Tapioca, and Dahlia**:
- Sweet Potato is a true underground root.
- Asparagus can propagate through its underground roots.
- Tapioca (Cassava) is also propagated through its roots.
- Dahlia can reproduce through tuberous roots.
- **Conclusion**: This option consists of plants that propagate through underground roots.

3. **Final Answer**:
- The correct group of plants that are propagated through underground roots is **Option 4: Sweet Potato, Asparagus, Tapioca, and Dahlia**.