Hardening in tissue culture is
keeping at 30-50ºC temperature for about 30 minutes.
acclimatization tissue culture plants slowly before growing in the field.
plunging the vials into water at 37-40ºC
none of the above
Meristem culture is practised in horticulture to get
somaclonal variation
haplods
virus-free plants
slow-growing callus
Differentiation of organs and tissues in a developing organism, is associated with
developmental mutations
differential expression of genes
lethal mutations
deletion of genes
The process , in which mature differentiated cells reverse to meristematic activity to form callus is called
de-differentiation
differentiation
cyto-differentiation
re-differentiation
The term 'totipotency' refers to
the capability of organism to regenerate its lost parts.
capability of somatic cells to produce complete organism
the introduction of foreign gene in a cell's DNA
the technique of growing immature embryos.
In crop improvement programmes,virus-free clones can be obtained through
grafting
hybridization
embryo culture
shoot apex culture
In callus culture,roots can be induced by the supply of
auxin
cytokinin
gibberellin
ethylene
Continuous addition of sugars in 'fed batch' fermentation is done to
obtain antibiotics
purify enzymes
degrade sewage
produce methane
First hormone produced artificially by culture bacteria,is
insulin
thyroxine
testosterone
adrenaline
Crop plants grown in monoculture are
low in yield
free from instraspecific competition
characterized by poor root system
highly prone to pests