Bark beetles are examples of insects that destroy plants.
Specifically, a bark beetle gets under the outer protective bark of a woody plant. Bark beetles therefore manage to access a shrub's or tree's dead and living tissue. That access spells the beginning of the end for the woody plant in question since detection often occurs too late for appropriate treatment.
Cherry trees and tomato plants.
Termites
destroys all the plants
The Boll Weevil
a grain weevil is an insect which destroys and reduce the market value of grains.
is a destructive animal or insect that destroys stored food and crops
These are plants which eats insects that lands on them.
Because it destroys them.
It destroys our harvest.
Plants do have defense mechanism to protect them from insect pests and diseases.
grasshopper
All plants except the imperfect flower that has no pistil