Description : The site of pupation of Helicoverpa armigera is — a. Leaf b. Seed c. Soil d. Boll
Last Answer : c. Soil
Description : Bemisia tabaci is scientific name of — a. Cotton whitefly b. Pink bollworm c. Cotton leaf roller d. American bollworm
Last Answer : a. Cotton whitefly
Description : Pink bollworm is a pest of – 1) Gram 2) Okra 3) Mustard 4) Cotton
Last Answer : 4) Cotton
Description : Resetting of cotton flowers and double seed formation in cotton bolls are symptoms of — a. Red cotton bug b. Spotted bollworm c. Pink bollworm d. None of these
Last Answer : c. Pink bollworm
Description : The scientific name of American Bollworm
Last Answer : Ans. Helicoverpa armigera
Description : The main symptom of American bollworm is
Last Answer : Ans. Larger circular bore holes with faecal pellets.
Description : What triggers activation of protoxin to active toxin of Bacillus thuringiensis in bollworm? (a) Acidic pH of stomach (b) Body temperature (c) Moist surface of midgut (d) Alkaline pH of gut
Last Answer : (d) Alkaline pH of gut
Description : Bt cotton is resistant to bollworm, it is due to (a) Bt is repellent to bollworm(b) Bt is contact poison for bollworm (c) Bt is stomach poison; it changes the permeability of stomach due to generation of pores in alkaline environment of stomach (d) Bt is causing death due to asphagsiation of insect
Last Answer : (c) Bt is stomach poison; it changes the permeability of stomach due to generation of pores in alkaline environment of stomach
Description : The scientific name of Pink Stem Borer
Last Answer : Ans. Sesamia inferens