The plants of F1 generation of Mendel’s Monohybrid cross are phenotypically red but genotypically hybrids.

1. In F₁ generation, obtained by crossing red and white flowers, the red was dominant over white.

2. Though F1 individuals were bearing red-coloured flowers, they contained factors for white coloured flowers also.

3. Therefore, the plants of F₁ generation are of Mendel’s Monohybrid cross are phenotypically red but genotypically hybrids.