To obtain virus-free healthy plants from a diseased one by tissue culture technique, which part/parts of the diseased plant will be taken?
(a) Apical meristem only
(b) Palisade parenchyma
(c) Both apical and axillary meristems
(d) Epidermis only
(c) Both apical and axillary meristems are free of virus for the healthy plant cultivation because of strong interferon activity in this region. These tissues form a protective impermeable covering around themselves, which is non-penetrable by any pathogen Hence, these tissue are used in the production of diseased free plants by tissue culture.