Biennials are

Options

A. monocarpic
B. polycarpic
C. trisporic
D. bisporic

Answer

**Step-by-Step Solution:**

1. **Understanding Biennials**: Biennials are plants that complete their life cycle in two years. In the first year, they typically grow vegetatively (leaves and roots), and in the second year, they flower, produce seeds, and then die.

2. **Analyzing the Options**:
- **Option 1: Monocarpic**: This refers to plants that flower, set seeds, and die after one reproductive cycle. Biennials fit this description as they flower and set seeds in their second year before dying. Therefore, this option is correct.
- **Option 2: Polycarpic**: This describes plants that can flower and set seeds multiple times throughout their life. This does not apply to biennials, making this option incorrect.
- **Option 3: Trisporic**: This term does not relate to the classification of plant life cycles and is therefore incorrect.
- **Option 4: Sporik**: Similar to trisporic, this term is not relevant to biennials and is incorrect.

3. **Conclusion**: Based on the analysis, the correct classification for biennials is monocarpic, as they complete their life cycle in two years, flowering and setting seeds only once before dying.

**Final Answer**: Biennials are monocarpic plants.

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