Biennials require how many growing seasons to complete their life cycle?

Biennials require how many growing seasons to complete their life cycle?

• A. One
• B. Three
• C. Two
• D. Four

Answer: (C)

Biennials complete their life cycle in two growing seasons. In the first season they focus on establishing a strong root system and vegetative growth, often forming a rosette or neat foliage rather than flowering. In the second season they resume vigorous growth, produce a flowering stalk, bloom, set seeds, and then die. This two-year pattern is why they’re distinct from annuals (one season) and perennials (can live for many seasons). In many biennials, flowering is triggered by a period of cold (vernalization), so they typically bloom in the second year after the plants have had a winter to fulfill that requirement. Examples include foxglove and hollyhock.

Biennials complete their life cycle in two growing seasons. In the first season they focus on establishing a strong root system and vegetative growth, often forming a rosette or neat foliage rather than flowering. In the second season they resume vigorous growth, produce a flowering stalk, bloom, set seeds, and then die. This two-year pattern is why they’re distinct from annuals (one season) and perennials (can live for many seasons). In many biennials, flowering is triggered by a period of cold (vernalization), so they typically bloom in the second year after the plants have had a winter to fulfill that requirement. Examples include foxglove and hollyhock.