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Questions and Answers
What percentage of plant diseases are caused by fungal or fungal-like organisms?
What percentage of plant diseases are caused by fungal or fungal-like organisms?
Which of the following is a biotic cause of plant disease?
Which of the following is a biotic cause of plant disease?
What is the primary function of nematodes in relation to plant diseases?
What is the primary function of nematodes in relation to plant diseases?
Which of the following terms describes diseases that are non-infectious and result from environmental conditions?
Which of the following terms describes diseases that are non-infectious and result from environmental conditions?
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Which of the following conditions would NOT typically be classified as an abiotic cause of plant disease?
Which of the following conditions would NOT typically be classified as an abiotic cause of plant disease?
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What defines a plant disease?
What defines a plant disease?
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Which statement about abiotic diseases is true?
Which statement about abiotic diseases is true?
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What role do nematodes play in relation to plant diseases?
What role do nematodes play in relation to plant diseases?
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What percentage of plant diseases are attributed to organisms other than fungi and fungal-like organisms?
What percentage of plant diseases are attributed to organisms other than fungi and fungal-like organisms?
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Which environmental condition could contribute to abiotic diseases?
Which environmental condition could contribute to abiotic diseases?
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What might be a consequence of a plant disease on crop yield?
What might be a consequence of a plant disease on crop yield?
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Which of the following best describes the distinction between biotic and abiotic diseases?
Which of the following best describes the distinction between biotic and abiotic diseases?
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Study Notes
Plant Disease Definition
- Plant disease is characterized by abnormal growth and/or dysfunction.
- It's a disruption of normal plant life processes.
- Diseases can stem from living or non-living agents.
Types of Plant Diseases
- Biotic diseases: Caused by living organisms (e.g., fungi, bacteria, viruses, nematodes).
- Abiotic diseases: Caused by non-living environmental factors (e.g., soil compaction, wind, frost, salt damage, girdling roots).
Characteristics of Plant Disease
- Alters plant appearance or function.
- Affects various plant processes.
- May reduce crop yield and quality.
Prevalence of Disease Types
- Approximately 85% of plant diseases are caused by fungi or fungal-like organisms.
- Other significant diseases affect food and feed crops from viruses and bacteria.
- Certain nematodes also cause plant diseases.
Abiotic Disease Description
- Abiotic diseases are non-infectious.
- They result from various environmental factors like air pollution, nutrient deficiencies, toxicities, and suboptimal growing conditions.
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Description
This quiz covers the definition and types of plant diseases, including biotic and abiotic causes. It also discusses how these diseases affect plant health and crop yield. Test your knowledge on how environmental factors and living organisms contribute to plant disease.
