Mendel observed 7 pairs of contrasting characters in Pisum sativum. Which one of the following is not a part of that?

Seven pair of contrasting characters of pea plant selected by Mendel—

i. Seed shape - Round / Wrinkled

ii. Seed colour - Yellow / Green

iii. Flower colour - Violet / WhitePod

iv. shape - Full / ConstrictedPod

v. colour - Green / YellowFlower

vi. position - Axillary / Terminal

vii. Stem height - Tall / Dwarf