Final answer:
The false statement about vitamin K is that bone metabolism is its primary function; its primary role is in blood clotting.
Step-by-step explanation:
The statement that is FALSE about vitamin K is "Bone metabolism is the primary function of vitamin K". Vitamin K is essential primarily for the blood clotting process due to its role in synthesizing clotting factors in the liver. Phylloquinone is indeed the plant form of vitamin K known as vitamin K1, and consuming an inadequate amount of vitamin K can result in excessive bleeding. Green leafy vegetables are significant sources of vitamin K, which supports not only clotting but also bone health, although it's not its primary function.