Biodiversity and Conservation — BIOLOGY STD 12 Science — Question

4. Shoot tip culture

Explanation:

Shoot tip culture is the culture of terminal part of shoot to a plant in in-vitro condition or in lab called as shoot tip culture. Mostly the shoot tip culture used for obtain disease free plant without genetically changes.

The plant which affected by any contaminant mostly by viruses have saved by shoot tip culture, because shoot tip of any affected plant is less or free from contamination (viruses, bacteria, fungus). 

Other cause of use to shoot tip culture is plant shoot tip are more efficient to cultivation or differentiation in-vitro, because cells of them newly generated and healthy comparison to other parts.