Answer
(a) Round seed producing pea plant is the dominant character. The ratio of F₁ generation will be 1:1.
(b) (i) All the offspring will be hybrids with the genotype Bb, and all of them will have black color.
(ii) Half of the offspring will be hybrids with the genotype Bb and black color, and the other half will be pure white with the genotype bb.
(c) The result in F₁ generation indicates that the red flowered plant is dominant and the white flowered plant is recessive. All the offspring in F₁ generation will have the genotype Rr and will show the dominant phenotype of red flower color.