See the link below.
Celery
the ones that like to be in celery
xylem and phloem
There is a nutrient found in only a few vegetables that you can find no where else.
A nutrient found naturally in many foods would be a mineral, just in general.
starch
sugar
carbohydrates
Fibre is a nutrient in itself, it is found in fruit, veg, pulses and wholegrains.
potassium
cholesterol