Which of the following is $NOT$ an application of callus and suspension culture?

The method of producing thousands of plants through tissue culture in a short period is called .......

Read the following statements:
$I.$ Colostrum is recommended for newborns because it is rich in antigens.
$II.$ Chikungunya is caused by a Gram-negative bacterium.
$III.$ Tissue culture has proved useful in obtaining virus-free plants.
$IV.$ Beer is manufactured by the distillation of fermented grapes.
How many of the statement$(s)$ is/are correct?

Plants raised through tissue cultures are clones of the 'parent' plant. Discuss the utility of these plants.

What is $Callus$?

"Give me a living cell of any plant and $I$ will give you a thousand plants of the same type". Is this only a slogan or is it scientifically possible? Write your comments and justify them.