Q. No.Which of the following lepidoptera is killed by proteins produced by a particular strain of Bacillus thuringienesis?
(1) Flies
(2) Armyworm
(3) Beetles
(4) Mosquitoes
(1) Flies
(2) Armyworm
(3) Beetles
(4) Mosquitoes
B. thuringienesis produces protein…..during …..their life cycle.
1. Solution, specific phase of
2. Crystal, specific phase of
3. Crystal, all through
4. Solution, all through
The crystal of Bt toxin has got
| 1. | Insecticidal protein |
| 2. | Pesticidal DNA |
| 3. | Insecticidal DNA |
| 4. | Insecticidal RNA |
The crystal of Bt toxin is solubilised by
(1) Alkaline pH of plant cells
(2) Acidic pH of the gut of bacteria
(3) Acidic pH of the gut of Bacillus
(4) Alkaline pH of budworms
The Bt toxin gets activated in
| 1. | Gut of ruminents |
| 2. | Gut of insects |
| 3. | Cytoplasm of Bacillus |
| 4. | Plant cells |
The activated Bt toxin binds to
(1) Surface of midgut epithelial cells
(2) Surface of hindgut eithelial cells
(3) Surface of foregut epithelial cells
(4) Surface of gut endothelial cells
Which of the following event is first in the action of Bt toxin?
(1) Binding to epithelial cells
(2) Creating pores
(3) Swelling
(4) Lysis
Which of the following event is last in the action of Bt toxin?
(1) Binding to epithelial cells
(2) Swelling
(3) Lysis
(4) Creating pores
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