Pennsylvania State University

Quiz #10

TURF 100

1)Which of the following is the best definition for the term "weed"

1. 1. any plant with an unknown use
   2. any plant that is not intentionally cultivated
   3. any plant that is growing where it is not wanted
   4. any plant in your lawn that is not a grass
   5. Poa annua

2. For control purposes, the two functional categories of insect pest are:
   1. root feeding insects and shoot/stem feeding insects
   2. flying insects and crawling insects
   3. insects that feed on dicots and insects that feed on monocots
   4. winter insects and summer insects
   5. small insects and large insects

3. Diseases of turfgrass are caused by biotic agents, as well as, by abiotic factors.
   1. True
   2. False

4. Turfgrass pathogens include which of the following:
   1. bacteria
   2. fungi
   3. nematodes
   4. viruses
   5. all of the above

5. Factors that are required for the manifestation of a biotic turfgrass disease are often represented by which of the following:
   1. a disease square
   2. a disease circle
   3. a disease triangle
   4. a disease hexagon
   5. a disease pentagon

6. Knowing and understanding the life cycle of any disease causing organism, insect pest, or invading weed species is an important first step to realizing control through pesticides.
   1. True
   2. False