By the fifth leaf stage, the plant is autotrophic (able to generate its own food) and its rate of vegetative growth is more rapid.
(the plant; is able; T:By the fifth leaf stage) (the plant; to generate; its own food) (its rate of vegetative growth; is; more rapid)
the plant the plant its rate of vegetative growth
is able to generate is
T:By the fifth leaf stage
its own food
more rapid