Differentiation of organs and tissues in a developing organism, is associated with
developmental mutations
differential expression of genes
lethal mutations
deletion of genes
The callus is not formed in
tissue culture
suspension culture
clonal propagation
sexual reproduction
Emasculation is related to
pureline
mass selection
clonal selection
hybridization
The technique that was employed to produce haploids of Datura was
meristem culture
anther culture
callus culture
protoplast culture
Crop plants grown in monoculture are
low in yield
free from instraspecific competition
characterized by poor root system
highly prone to pests
Which of the following shows correct chronological order of the events occurring during callus culture?
Callus→ Cell division→ Explant→ Addition of cytokinin→ Cells acquire meristematic property
Explant→ Callus→ Cell division→ Addition of cytokinin→ Cells acquire meristematic property
Explant→ Cell division→ Callus→ Addition of cytokinin→ Cells acquire meristematic property
Callus→ Explant→ Cell division→ Addition of cytokinin→ Cells acquire meristematic property
In order to obtain virus-free plants through tissue culture, the best method is
embryo rescue
Meristem culture is practised in horticulture to get
somaclonal variation
haplods
virus-free plants
slow-growing callus
Which one of the following is the most suitable,medium for culture of Drosophila melanogaster?
Moist bread
Agar agar
Ripe banana
Cow dung
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
