The phenotypic ratio of a dihybrid cross is ....

When a cross is made between a tall plant with yellow seeds $(TtYy)$ and a tall plant with green seeds $(Ttyy)$,what proportions of phenotypes in the offspring could be expected to be:
$(a)$ Tall and green.
$(b)$ Dwarf and green.

How many different kinds of gametes may be produced by an organism with the genotype $RrYy$?

When a tall plant with rounded seeds $(TTRR)$ is crossed with a dwarf plant with wrinkled seeds $(ttrr)$,the ${F_1}$ generation consists of tall plants with rounded seeds. How many types of gametes will an ${F_1}$ plant produce?

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

In Mendel's dihybrid cross experiment,what is the phenotypic ratio of the progeny obtained from a test cross of the $F_1$ generation?