6.The cells in tissue culture divide and form a mass of undifferentiated tissue called

7.The technique used industrially to multiply plants which are difficult to propagate by conventional means is

8.The process of transferring plantlets to pots and subjected gradually to natural environmental conditions is called

9.The following ratio of hormonal concentration is required to induce callus to form shoot and root

10.The production of insulin, interferon, human growth hormones, proteins and vaccines are based on