Select the odd one w.r.t natural methods of reproduction.

Options

A. Rhizome in Banana
B. Offset in water hyacinth
C. Root cuttings in Blackberry
D. Aerial shoots in Opuntia

Answer

To solve the question of selecting the odd one with respect to natural methods of reproduction, we can follow these steps:

### Step 1: Understand Natural Methods of Reproduction
Natural methods of reproduction refer to the ways in which organisms reproduce without human intervention. This includes processes that occur naturally in the environment.

### Step 2: Identify the Options
We need to analyze the given options:
1. Rhizome in banana
2. Offset in water hyacinth
3. Aerial shoots in Opuntia
4. Root cuttings in blackberry

### Step 3: Analyze Each Option
- **Rhizome in Banana**: This is a natural method of vegetative reproduction where the plant grows new shoots from its underground stem (rhizome).

- **Offset in Water Hyacinth**: This is also a natural method of reproduction where new plants grow from the offsets (small plants that develop on the parent plant).

- **Aerial Shoots in Opuntia**: This method involves the growth of new plants from the aerial shoots of the cactus, which is a natural process.

- **Root Cuttings in Blackberry**: This method involves cutting the roots of the blackberry plant and planting them to grow new plants. This is an artificial method of reproduction because it requires human intervention.

### Step 4: Identify the Odd One Out
From the analysis, we can see that options 1, 2, and 3 are all natural methods of reproduction, while option 4 (root cuttings in blackberry) is an artificial method. Therefore, the odd one out is:

**Answer: Root cuttings in blackberry (Option C)**