What are the phenotype and genotype of F1 and F2?

Question

In garden peas, tall stem T is dominant over short stem t and green pods G are dominant over yellow pods g). Suppose a homozygous short green plant is crossed with homozygous tall yellow.

Answer 1

This is a typical dihybrid cross. In the F1 generation, all the individuals would be heterozygous tall and green (TtGg).
If the F1 individuals are crossed with each other, you would get offspring that are tall and green, tall and yellow, short and green, and short and yellow, in a 9:3:3:1 ratio.

Answer 2

ttGG x TTgg

Genotype will be all TtGg
Phenotype will be all tall green