Answer:
Monohybrid cross:
The monohybrid cross may be defined as a type of cross between two organism taking single trait at a time. For example: the cross between a tall pea plant and the short pea plant. The genotype ratio of monohybrid cross tat follows Mendelian inheritance is 1:2:1.
Dihybrid cross:
Th dihybrid cross may be defined as the cross between two organisms taking two traits at a time. For example: the cross between round and yellow seed with green and wrinkled seed. The phenotype ratio of dihybrid cross that follows Mendelian inheritance is 9:3:3:1.