Pure homozygous offsprings in a dihybrid cross in the $F_2$ generation will be

Heterozygous round and yellow seeded pea plants were selfed and a total of $800$ seeds were collected. What is the total number of seeds with the first dominant trait (round) and the second recessive trait (green)?

In a cross between $AABB$ and $aabb$,what is the probability of obtaining $AaBb$ in the $F_2$ generation (in $/16$)?

When a dwarf plant with terminal flowers is crossed with a tall plant with axial flowers,what will be the proportion of dwarf plant progeny in the $F_1$ generation (in $\%$)?

In a dihybrid cross between $AABB$ and $aabb$,the $F_2$ generation produces offspring with genotypes $AABB$,$AABb$,$AaBB$,and $AaBb$. What will be their phenotypic ratio?

In an experiment on pea plant,pure plants with yellow round seeds $(YYRR)$ were crossed with plants producing green wrinkled seeds $(yyrr)$. What will be the phenotypic ratio of $F_1$ progeny?