Annuals are plants that perform their entire life cycle - seed to flower to seed - within a single growing season.
(Annuals; are; plants that perform their entire life cycle - seed) (plants; perform; their entire life cycle - seed; to flower to seed - within a single growing season)
Annuals plants
are perform
plants that perform their entire life cycle - seed
their entire life cycle - seed to flower to seed - within a single growing season