$A$ technique of micropropagation is

$EDTA$ is widely used in tissue cultures; it is a:

The technique of parasexual fusion was first discovered by

Which of the following is a method of plant tissue culture?

The plant material which is widely used in the preparation of culture medium is

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?