mass selection is preferred in case of

Options

A. Vegetatively propagated plants
B. Cross pollinated plants
C. Self pollinated plants
D. Both B and C.

Answer

**Step-by-Step Solution:**

1. **Understand Mass Selection**: Mass selection is a breeding method where plants are selected based on their phenotypic traits (observable characteristics) and performance. This method aims to improve the overall population by selecting the best individuals.

2. **Identify the Types of Plants**: The question provides four options:
- A) Vegetatively propagated plants
- B) Cross-pollinated plants
- C) Self-pollinated plants
- D) Both B and C

3. **Evaluate Each Option**:
- **Vegetatively Propagated Plants**: Mass selection is not preferred here because these plants are cloned from a part of the plant, which does not allow for selection based on phenotypic variation.
- **Cross-Pollinated Plants**: Mass selection is effective as these plants show greater genetic variation, allowing for the selection of desirable traits.
- **Self-Pollinated Plants**: Mass selection can also be applied, but it is less effective compared to cross-pollinated plants due to lower genetic variability.
- **Both B and C**: Since mass selection can be applied to both cross-pollinated and self-pollinated plants, this option is valid.

4. **Conclusion**: Based on the evaluation, mass selection is preferred in the case of both cross-pollinated plants and self-pollinated plants. Therefore, the correct answer is **D) Both B and C**.