Biennial plants complete their life cycle in how many growing seasons?

Biennial plants complete their life cycle in how many growing seasons?

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

Answer: (A)

Biennials take two growing seasons to complete their life cycle. In the first year they focus on building vegetative growth and storing energy, then in the second year they use that stored energy to flower, set seed, and typically die. This two-season pattern distinguishes them from annuals, which finish everything in one season, and perennials, which live for many years and can flower multiple times. Some biennials may require a cold period to trigger flowering, but the essential idea is that the full life cycle spans two growing seasons.

Biennials take two growing seasons to complete their life cycle. In the first year they focus on building vegetative growth and storing energy, then in the second year they use that stored energy to flower, set seed, and typically die. This two-season pattern distinguishes them from annuals, which finish everything in one season, and perennials, which live for many years and can flower multiple times. Some biennials may require a cold period to trigger flowering, but the essential idea is that the full life cycle spans two growing seasons.