www.bbcnoun.com.ng CRP303 7/10 1. The lowest population density that will cause economic damage or injury that will justify the cost of artificial control measures is: Economic threshold 2. Which of these options is not a pesticide? Glyphosphate 3. Which of these statements are true about the Class insecta? Possession of two body regions, four pairs of legs, absence of antennae 4. Biological changes that are favourable to pest include all the following EXCEPT: Rise in competing species 5. Perennial pests which cause serious and persistent economic damage in the absence of effective control measures are: Major pests 6. Pests that move from one area to cause damage to crops in another area are Migrant pests 7. The use of scare crows, hand picking, use of trap, fencing and burning of debris is ___ of control. Physical method 8. Climatic conditions which promote pest include all BUT: Rainfall 9. Which of these options belong to the Class chilopoda? Have elongated body with 15 or more pairs of legs with only 1 pair occurring on each body segment 10. The giant looper (Ascotis selenari reaprocaria) is what kind of pest? Potential pest