Damaged sieve tubes are sealed by deposition of
Pectin
Callus
Suberin
Lignin
Somatic hybrids are produced by
Pollen grains of a plant, whose $2 n=28$, are cultured to get callus by tissue culture method. What would be the number of chromosomes in the cells of the callus?
To obtain virus free healthy plants from a diseased one by tissue culture technique, which part/parts of the diseased plant will be taken?
Which is correct for pomato ?