Plant species that complete their lifecycle in one season are known as ________.

a. biennials

b. perennials

c. annuals

d. polycarpic

Lifespan of a plant is the amount of time it takes from its birth to death, lifecycle refers to the different stages of a plant that occurs between seed germination and the plant producing its own seeds.

• Biennial plants live for two years (or two seasons). A biennial plant's vegetative phase occurs in the first season, followed by its reproductive period in the second.
• Perennial plants are those that remain active throughout the year or have a lifespan of more than two growing seasons.
• Flowers are produced by polycarpic plants multiple times during their lives. Polycarpic fruit trees, such as apple and orange trees, blossom every year. Plants are generally either biennial or perennial.

An annual plant is one that blooms, germinates, and dies all in the same year. One example is Arabidopsis, often known as mouse-ear cress.