Explanation should include
- physical mechanisms
- hairy stems
- thorns/spines
- wax/cuticle
- bark
- odors
- trichomes
- chemical mechanisms
- secondary metabolites/toxins (e.g., poison ivy, nicotine)
- phytoecdysteroids
- the attraction of beneficial insects.
Process/Skill Questions:
- What leaf structures protect plants from insects?
- What physical and chemical mechanisms do plants use to protect themselves?