Shoot tip culture is preferred for the international exchange of germplasm because:

Assertion $A$: Growth is faster in suspension culture compared to callus culture.
Reason $R$: Agitating the culture in the medium using a rotary shaker facilitates the mixing of nutrients and gas exchange.

In which of the following methods can plantlets be developed from seeds that remain dormant for a long time?

$A$ piece of sterile plant tissue to be used for tissue culture under aseptic conditions is known as:

What is tissue culture useful for?

Given below are two statements:
Statement $I$: In suspension culture and callus culture technique,subculturing is necessary.
Statement $II$: Subculturing is needed only in suspension culture technique.
In the light of above statements,select the correct option given below: