Forest Pathology MCQs January 8, 2026August 19, 2024 by u930973931_answers 20 min Score: 0 Attempted: 0/20 Subscribe 1. What is forest pathology? (A) The study of tree diseases and their management (B) The study of forest ecosystems (C) The study of forest management techniques (D) The study of forest biodiversity 2. Which pathogen is commonly known to cause “Dutch elm disease”? (A) Phytophthora infestans (B) Fusarium oxysporum (C) Ceratocystis ulmi (D) Armillaria mellea 3. What is a common symptom of tree decline due to fungal infection? (A) Root rot (B) Leaf drop (C) Needle discoloration (D) All of the above 4. Which fungal disease affects the vascular system of trees, causing wilting and death? (A) Powdery mildew (B) Root rot (C) Rust (D) Verticillium wilt 5. Which of the following is NOT a common method of controlling forest pathogens? (A) Increasing humidity (B) Biological control (C) Genetic resistance (D) Chemical fungicides 6. Which pathogen is responsible for causing “black knot” disease in trees? (A) Apiosporina morbosa (B) Plasmopara viticola (C) Puccinia graminis (D) Phytophthora ramorum 7. What is a common symptom of “powdery mildew” in trees? (A) Wilting and dieback (B) Dark, sunken lesions on bark (C) Root rot and yellowing leaves (D) White, powdery spots on leaves 8. Which method involves using other organisms to control forest pathogens? (A) Chemical control (B) Cultural practices (C) Biological control (D) Mechanical control 9. What is the primary mode of transmission for “rust” fungi in forests? (A) Soil (B) Airborne spores (C) Water (D) Insect vectors 10. Which pathogen causes “Sudden Oak Death”? (A) Fusarium solani (B) Phytophthora ramorum (C) Armillaria ostoyae (D) Bursaphelenchus xylophilus 11. Which disease is characterized by “white rot” of the wood in trees? (A) Fomes fomentarius (B) Red heart rot (C) Polyporus dry rot (D) Armillaria root rot 12. Which of the following is a common fungal pathogen that causes “needle cast” in conifers? (A) Scleroderma spp. (B) Cronartium spp. (C) Phytophthora spp. (D) Lophodermium spp. 13. What is the primary characteristic of “root rot” diseases? (A) Wilting of leaves (B) Discoloration of needles (C) Sunken lesions on bark (D) Decay and death of roots 14. Which forest pathogen is known for causing “cankers” on trees? (A) Sphaeropsis sapinea (B) Ceratocystis ulmi (C) Phytophthora cinnamomi (D) Puccinia spp. 15. Which tree disease is typically associated with “heart rot”? (A) Quercus robur (B) Pinus sylvestris (C) Pseudotsuga menziesii (D) Fagus sylvatica 16. What is a common sign of “bacterial blight” in trees? (A) White, powdery mildew (B) Necrotic leaf spots and galls (C) Root decay and wilting (D) Yellowing and curling of leaves 17. Which disease is caused by the pathogen “Fusarium oxysporum”? (A) Dutch elm disease (B) Sudden Oak Death (C) Fusarium wilt (D) Black knot 18. What is the main purpose of “cultural control” in managing forest pathogens? (A) To use chemicals to eradicate pathogens (B) To genetically modify trees for resistance (C) To introduce beneficial microorganisms (D) To create environmental conditions unfavorable to pathogens 19. Which pathogen causes “Phytophthora root rot” in trees? (A) Fusarium solani (B) Phytophthora cinnamomi (C) Armillaria mellea (D) Pythium spp. 20. Which type of control method involves physical removal of infected plant parts? (A) Chemical control (B) Mechanical control (C) Biological control (D) Cultural control