Principals of Plant Science Exam Review
UPDATED ACTUAL Exam Questions and
CORRECT Answers
__________ herbicides only affect plants that are actively growing. - CORRECT
ANSWER - Postemergent
Name the three main types of weeds. - CORRECT ANSWER - Perennials, annuals, and
biennials
The trade name of a pesticide is the name assigned to the active ingredient of the pesticide.
(True/false) - CORRECT ANSWER - False
___________ controls which includes traps, fly swatters, pulling, chopping, or mowing weeds
and weed barriers. - CORRECT ANSWER - Physical
Signal words are used to provide a brief explanation of the hazards or toxicity of the product.
(True/false) - CORRECT ANSWER - True
__________ herbicides prevent germination and emergence of the plant before wanted
vegetation is planted. - CORRECT ANSWER - Preplant
_________ compete with desirable plants for nutrients, water, and sunlight. - CORRECT
ANSWER - Weeds
_______ pesticides are considered to be environmentally friendly. - CORRECT
ANSWER - Biorational
___________ controls such as mulches, crop rotation, tie of planting, planting density, planting
arrangements, and proper irrigation. - CORRECT ANSWER - Cultural
, ________ herbicides kill all kinds of plants. - CORRECT ANSWER - Selective
A plant disease is any condition in a plant caused by living and no living agents that interferes
with its normal growth and development. (True/false) - CORRECT ANSWER - True
_______ is a pesticide which affects fungi. - CORRECT ANSWER - Fungicide
______ controls with the use of botanical, natural, and synthetic. - CORRECT ANSWER -
Chemical
A pesticide is any substance that reduces, prevents, repels, or eliminates pests. (True/false) -
CORRECT ANSWER - True
_________ are unwanted plants that compete with our wanted plants for water, nutrients, and
sunlight. - CORRECT ANSWER - Weeds
________ are in fact a parasite, they sustain life and gain nutrition through another life form. -
CORRECT ANSWER - Nematodes
_______ is a parasite which affects birds. - CORRECT ANSWER - Avicides
______ controls with the use of botanical, natural, and synthetic pesticides. - CORRECT
ANSWER - Chemical
_______ are weeds which typically live longer than a year but no longer than two years. -
CORRECT ANSWER - Biennials
_________ are a form of pesticides that prevent or eliminate weeds and thus replace or reduce
manual and mechanical weeding. - CORRECT ANSWER - Herbicides
UPDATED ACTUAL Exam Questions and
CORRECT Answers
__________ herbicides only affect plants that are actively growing. - CORRECT
ANSWER - Postemergent
Name the three main types of weeds. - CORRECT ANSWER - Perennials, annuals, and
biennials
The trade name of a pesticide is the name assigned to the active ingredient of the pesticide.
(True/false) - CORRECT ANSWER - False
___________ controls which includes traps, fly swatters, pulling, chopping, or mowing weeds
and weed barriers. - CORRECT ANSWER - Physical
Signal words are used to provide a brief explanation of the hazards or toxicity of the product.
(True/false) - CORRECT ANSWER - True
__________ herbicides prevent germination and emergence of the plant before wanted
vegetation is planted. - CORRECT ANSWER - Preplant
_________ compete with desirable plants for nutrients, water, and sunlight. - CORRECT
ANSWER - Weeds
_______ pesticides are considered to be environmentally friendly. - CORRECT
ANSWER - Biorational
___________ controls such as mulches, crop rotation, tie of planting, planting density, planting
arrangements, and proper irrigation. - CORRECT ANSWER - Cultural
, ________ herbicides kill all kinds of plants. - CORRECT ANSWER - Selective
A plant disease is any condition in a plant caused by living and no living agents that interferes
with its normal growth and development. (True/false) - CORRECT ANSWER - True
_______ is a pesticide which affects fungi. - CORRECT ANSWER - Fungicide
______ controls with the use of botanical, natural, and synthetic. - CORRECT ANSWER -
Chemical
A pesticide is any substance that reduces, prevents, repels, or eliminates pests. (True/false) -
CORRECT ANSWER - True
_________ are unwanted plants that compete with our wanted plants for water, nutrients, and
sunlight. - CORRECT ANSWER - Weeds
________ are in fact a parasite, they sustain life and gain nutrition through another life form. -
CORRECT ANSWER - Nematodes
_______ is a parasite which affects birds. - CORRECT ANSWER - Avicides
______ controls with the use of botanical, natural, and synthetic pesticides. - CORRECT
ANSWER - Chemical
_______ are weeds which typically live longer than a year but no longer than two years. -
CORRECT ANSWER - Biennials
_________ are a form of pesticides that prevent or eliminate weeds and thus replace or reduce
manual and mechanical weeding. - CORRECT ANSWER - Herbicides
