A protoplast is a cell

Lac is secreted by

What are the requirements in tissue culture

The most used domesticated animal by Eskimos is

Hisardale is a new breed of sheep developed in Punjab by one of the breeding technique in which superior male of one breed is mated with superior females of another breed. Identify the breeding technique from the option given below

Which part would be most suitable for raising virus­free plants for micropropagation ?