Suggest a possible explanation of why the seeds in a pea pod are arranged in a row, whereas those in tomato are scattered in the juicy pulp.
Unlike tomato’s pericarp, which is differentiated into epicarp, mesocarp, and endocarp; the pericarp in pea pod is not differentiated into many layers. The arrangement of seeds in a fruit depends on placentation. Pea flower shows marginal placentation, while tomato shows axial placentation. Placentation refers to the arrangement of ovules in the ovary.