PCA PLANT PATHOGENS ACTUAL FINAL EXAM |
WITH COMPLETE QUESTIONS AND ANSWERS |
2025/2026 LATEST UPDATED | 100 % RATED AND
VERIFIED SOLUTIONS | GET AN A+
1. Plant pathogens can be a factor in integrated pest management for controlling insects and mites
Define plant disease?
Answer Abnormal growth and/or dysfunction of a plant, which can be caused by bacteria,
fungi or viruses
2. What are the four types of pathogens?
Answer Viruses, Bacteria, Fungi, and Parasites.
3. What is the difference between a pathogen and a disease?
Answer A pathogen is any organism
that causes disease.
4. Powdery mildews are caused by?
mailto:https://www.stuvia.com/user/Wisdoms
, Answer Funguses
5. What are some abiotic factors that cause plant disease?
Answer Weather, soils, chemical, or
mechanical injuries.
6. What are some biotic factors that cause plant disease?
Answer Fungi, bacteria, viruses, nema- todes, i.e, anything living.
7. which of the following is a sign of a disease Answer white mycelium on twigs and fruit
8. some abiotic factors that cause plant disease are
Answer air pollutants
9. which of the following biotic factors contribute to plant disease
Answer viroids and
viruses
10. What does the term facultative refer to? Answer Capable of existing in varying environments.
11. Facultative parasites
Answer An organism that may resort to parasitic activity, but does not absolutely rely on
any host for completion of its life cycle.
12. Obligate parasites
Answer Must spend at least some of their life cycle in or on a host.
mailto:https://www.stuvia.com/user/Wisdoms
WITH COMPLETE QUESTIONS AND ANSWERS |
2025/2026 LATEST UPDATED | 100 % RATED AND
VERIFIED SOLUTIONS | GET AN A+
1. Plant pathogens can be a factor in integrated pest management for controlling insects and mites
Define plant disease?
Answer Abnormal growth and/or dysfunction of a plant, which can be caused by bacteria,
fungi or viruses
2. What are the four types of pathogens?
Answer Viruses, Bacteria, Fungi, and Parasites.
3. What is the difference between a pathogen and a disease?
Answer A pathogen is any organism
that causes disease.
4. Powdery mildews are caused by?
mailto:https://www.stuvia.com/user/Wisdoms
, Answer Funguses
5. What are some abiotic factors that cause plant disease?
Answer Weather, soils, chemical, or
mechanical injuries.
6. What are some biotic factors that cause plant disease?
Answer Fungi, bacteria, viruses, nema- todes, i.e, anything living.
7. which of the following is a sign of a disease Answer white mycelium on twigs and fruit
8. some abiotic factors that cause plant disease are
Answer air pollutants
9. which of the following biotic factors contribute to plant disease
Answer viroids and
viruses
10. What does the term facultative refer to? Answer Capable of existing in varying environments.
11. Facultative parasites
Answer An organism that may resort to parasitic activity, but does not absolutely rely on
any host for completion of its life cycle.
12. Obligate parasites
Answer Must spend at least some of their life cycle in or on a host.
mailto:https://www.stuvia.com/user/Wisdoms
