Among seven pairs of traits studied by Mendel, number of traits related to flower, pod and seed were

Mendel selected 14 true-breeding pea plant varieties, as pairs which were similar except for one character with contrasting traits.

S.No    Character                    Contrasting traits       Chromosome number

1.         Stem height                    Tall / dwarf                            4

2.         Flower position              Axial/terminal                       4

3.         Flower colour                 Violet/white                          1

4.        Pod shape                      Inflated/constricted              4

5.        Pod colour                     Green/yellow                          5

6.        Seed colour                   Yellow/Green                          1

7.        Seed shape                    Round/wrinkled                      7

In this 1 character is related to stem height, 2 characters are related to flower, 2 characters related to pod, 2 characters are related to seed.