The crossing of a homozygous tall plant with a dwarf plant in the $F_2$ generation would yield plants in which ratio?

$A$ tall true-breeding garden pea plant is crossed with a dwarf true-breeding garden pea plant. When the $F_1$ plants were selfed,the resulting genotypes were in the ratio of:

The diagram below shows a monohybrid cross. What are the genotypes for height in plants $P, Q$,and $R$?

When Mendel crossed a true-breeding white-flowered strain of peas with a true-breeding red-flowered strain,the individuals in the $F_2$ generation represented:

When a pure tall plant is crossed with a pure dwarf plant,and the resulting hybrid plants are self-pollinated,what will be the phenotypic ratio of the offspring in the $F_2$ generation?

In garden pea,round shape of seeds is dominant over wrinkled shape. $A$ pea plant heterozygous for round shape of seed is selfed and $1600$ seeds produced during the cross are subsequently germinated. How many seedlings would have the parental phenotype?