Grafting is a technique, which involves ,
i. A connection between the root system of two different plants .
ii. A composite plant production .
iii. The physical and physiological joining of two separate individuals.
iv. The plants used are non-cambium containing ones.

Options

A. i,ii and iii only
B. ii and iii only
C. ii , iii and iv only
D. i and iv only

Answer

To solve the question regarding grafting, we need to evaluate each statement provided and determine their accuracy based on our understanding of the grafting technique.

### Step-by-Step Solution:

1. **Understanding Grafting**: Grafting is a horticultural technique that involves joining two different plants together so that they grow as one. This typically includes a shoot system (the scion) and a root system (the rootstock).

2. **Evaluating Statement i**:
- Statement: "A connection between the root system of two different plants."
- Evaluation: This statement is incorrect. Grafting involves a connection between the shoot system of one plant and the root system of another, not just the root systems.

3. **Evaluating Statement ii**:
- Statement: "A composite plant production."
- Evaluation: This statement is correct. Grafting results in the production of a composite plant that has characteristics from both the scion and the rootstock.

4. **Evaluating Statement iii**:
- Statement: "The physical and physiological joining of two separate individuals."
- Evaluation: This statement is also correct. Grafting involves both physical and physiological processes to join two different plant individuals.

5. **Evaluating Statement iv**:
- Statement: "The plants used are non-cambium containing ones."
- Evaluation: This statement is incorrect. Grafting typically requires plants that contain cambium, as the cambium layer is essential for the successful joining of vascular tissues.

6. **Conclusion**: Based on the evaluations:
- Correct statements: ii (composite plant production) and iii (joining of two separate individuals).
- Incorrect statements: i (connection of root systems) and iv (non-cambium containing plants).

### Final Answer:
The correct options are ii and iii. Therefore, the answer is option B.

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