In a monohybrid cross, 120 plants are obtained. The ratio of homozygous and heterozygous will be

Let us consider that a pure tall plant was crossed with a dwarf plant. Then all the F1 progenies will be tall and when these progenies are selfed then we will get genotype in the ratio of 1(TT):2(Tt):1(tt). Therefore, number of homozygous offspring will be 24×120=60 and the number of heterozygous offspring will also be 24×120= 60.