Give differences between plant hormones and animal hormones.

• A
  Plant hormones are produced in various tissues,while animal hormones are produced in specialized endocrine glands.
• B
  Plant hormones are generally simple molecules,whereas animal hormones are complex proteins,peptides,or steroids.
• C
  Plant hormones act locally or are transported via xylem/phloem,while animal hormones are transported via the circulatory system.
• D
  All of the above.