If a homozygous tall plant is crossed with a dwarf plant,what will be the ratio in the progeny?

In one of the hybridisation experiments,a homozygous dominant parent and a homozygous recessive parent are crossed for a trait. (Plant shows Mendelian inheritance pattern)

In a monohybrid cross,if you get a $3:1$ ratio,it denotes that:

Using a Punnett square,work out the distribution of phenotypic features in the first filial generation after a cross between a homozygous female and a heterozygous male for a single locus.

If a dwarf pea plant was treated with Gibberellic acid,it grew as tall as a pure tall pea plant. If this treated plant is crossed with a pure tall plant,then the phenotypic ratio of the offspring is likely to be:

$A$ heterozygous tall pea plant was crossed with a dwarf pea plant. The progeny of the cross shows . . . . . . .