Biennials are characterized by

Options

A. Bearing flowers for two season
B. Forming aerial stem and flowering in second year
C. Flowering in first year and forming fruits in second year
D. Forming storage organs in the first year and reproduc- tive organ or flowers in the second year

Answer

**Step-by-Step Solution:**

1. **Definition of Biennials**: Biennials are plants that complete their life cycle in two years. They typically grow vegetatively in the first year and then flower and produce seeds in the second year.

2. **First Year Growth**: In the first year, biennial plants focus on growing and developing their vegetative structures. This includes forming roots, stems, and leaves, and they often develop storage organs (like bulbs or tubers) to store nutrients.

3. **Second Year Reproduction**: In the second year, biennials will use the nutrients stored in their storage organs to produce flowers and seeds. This is the reproductive phase of their life cycle.

4. **Evaluating Options**:
- **Option 1**: "Bearing flowers for two seasons" - This is incorrect because biennials do not flower in both years; they flower only in the second year.
- **Option 2**: "Forming aerial stem and flowering in second year" - This is incorrect as biennials do not necessarily form aerial stems.
- **Option 3**: "Flowering in the first year and forming fruit in second year" - This is incorrect because flowering occurs in the second year, not the first.
- **Option 4**: "Forming storage organ in the first year and reproductive organs or flowers in the second year" - This is correct as it accurately describes the biennial life cycle.

5. **Conclusion**: The correct characterization of biennials is that they form storage organs in the first year and produce flowers and seeds in the second year.

**Final Answer**: Biennials are characterized by forming storage organs in the first year and reproductive organs or flowers in the second year.

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