Name the insect pest that is killed by the products of cryIAc gene. Explain how the gene makes the plant resistant to the insect pest.

Name one insect pollinated plant.

Name the pest that destroys the cotton bolls. Explain the role of bacillus thuringensis in protecting the cotton drop against the pest to increase the yields .

Study the schematic representation of the genes involved in the lac operon given below and answer the questions that follow : {:(p,i,p,o,z,y,a):} (a) Identify and name the regulatory gene in this operon. Explain its role in 'switching off' the operon. (b) Why is the lac operon's regulation referred to as negative regulation ? (c ) Name the inducer molecule and the products of the genes 'z' and 'y' of the operon. Write the functions of these gene products.

Select the correct match w.r.t crop variety and resistance to insect pests

Illustrated below is a DNA segment, which constitutes a gene. Explain how do these genes express?

One of the main objective of biotechnology is to minimize the use of insecticides on cultivated crops. Explain with the help of a suitable example how insect resistant crops have been developed using techniques of biotechnology.

Insect pest resistant Bt Cotton was developed by

Write the name of three insect orders which are killed by some strains of bacillus thurenginses ?

Name the specific type of gene that is incorporated in a cotton plant to protect the plant against cotton boll worm infestation.

Name the specific type of gene that is incorporated in a cotton plant to protect the plant against cotton boll worm infestation.