What are the different plant pests? i need HELP ASAP! I need it on my homework! what are...

i need HELP ASAP! I need it on my homework! what are the 3 kind of plant pests?
Where can you buy green mums? You...
Answers:    "Pests attacking houseplants may be divided into three groups according to the damage they cause: chewing pests, sucking pests and annoyance pests."

Here's more info:
http://county.ces.uga.edu/cobb/Horticult...
Tell me some plants that are delicate and...
Insect pests,
Bird pests,
Nematodal pests,
Animal pests,
Fungal pests,
Bacterial pests,
Viral pests.