Bt-toxin becomes activated at pH of

Bt toxins are

Bt toxin is :

'Bt' toxin is

'Bt' toxin is

phytochrome becomes active in

In which part of insect's alimentary canal does Bt toxin become active?

Assertion: Bt -toxines kills the Bacillus thuringiensis Reason :Bt-toxins exist as active toxins in Bacillus thuringiensis

Assertion: The activated toxin binds to the surfacce of midgut epithelial cells & create pores that cause cell swelling & lysis & finally death of insect Reason :Most of Bt toxins are insect group specific

When pH or temperature is plotted against enzyme activity the shape of curve obtained is

Assertion (A) : Acidic pH of insect converts inactive Bt toxin into active form Reason (R) : Most of Bt toxins are insect group specific.