How Insecticides Spray Kill Cockroaches? - By Kishor Singh #shorts

How many malpigian tubules present in cockroach?

Why does the insecticidal protein produced by Bacillus thuringiensis not kill the bacterium, but kills the cotton bollworm? Explain.

Why do toxic insecticide protein secreted by Bacillus thuringiensis kill insects?

How many locomotory appendages a cockroach has ?

How is brood pouch formed in female cockroach?

Answer in one word or one line (i) Give the common name of Periplaneta americana. (ii) How many spermathecae are found in cockroach ? (iii) What is the position of ovaries in cockroach ? (iv) How many segments are present in the abdomen of cockroach ? (v) Where do you find Malpighian tubules ?

In case of Bt cotton how does the toxic insecticide protein produced by bacterium kill the insect pest but not the cell of Bacillus thuringiensis where the toxic protein is generated?