Which of the following depicts Mendel's dihybrid phenotypic ratio?

How many phenotypes can be obtained if a pea plant $(RrTt)$ is crossed with another pea plant with the same genotype?

The ratio $1:1:1:1$ is observed in:

$A$ cross between two pea plants,tall with axial flowers and dwarf with terminal flowers,produced offspring that were tall with axial flowers and tall with terminal flowers in the ratio $1:1$. What will be the genotype of the parents?

In the $F_2$ generation of a dihybrid cross,how many plants possess the same genotype as the parental generation?

If $AAbb \times aaBB$,then the phenotypic ratio of its $F_{2}$ progeny will be