Question

do plants have an endocrine system . if no, but they secreate hormones

Answer 1

no the plants have no endocrine system but they secreate hormones

Answer 2

Hii, Harshi here..
Hmm... Logical question..
Plants don't have neurons or a nervous system . They do however respond to the environment by "tropisms" . These are 
growth responses causing a plant to go toward or away from a stimulus. If the movement is toward the stimulus it is called a positive tropism; away from the stimulus is called a negative tropism. These are some; you can look up more: Light stimulus-phototropism; gravity-geotropism;;currents-rheotropism 
water-hydrotropism; contact-thigmotropism.........etc. 
No endocrine system with glands, as such. However 
plants do have "plant regulators" which act similar to animal hormones. These hormones have names like kinins, gibberillins, and auxins.
They are produced at the tips of the plants & bud regions and regulate things like speed of growth, seed dispersal,falling of leaves, development of fruit, and more.
*** Hope it helps you ***