In order to obtain disease-free plants through tissue culture methods,the best technique is:

After how many weeks is the callus obtained?

Why is the culture continuously agitated in a rotary shaker during suspension culture?
$(i)$ To facilitate gas exchange for the cells.
$(ii)$ To ensure proper mixing of nutrients in the medium.
$(iii)$ To sterilize the equipment used in the process.
$(iv)$ To maintain a uniform temperature for the inoculum.
$(v)$ This process causes cell aggregates to break into smaller,distinct cell clusters.

Which of the following is an example of somatic hybridization?

To meet the demands of the society,in vitro production of a large number of plantlets in a short duration is practised in floriculture and horticulture industry today. This is called

By tissue culture,an indefinite number of plants from a small amount of parental tissue can be obtained. This technique is of great economic importance as