I remember a science experiment I did
at home , from some books for a person my age
10 y.o. I remember them vividly :
take some fresh celery , place the trimmed stalks
in some diluted ink , in my case it was red ink
and wait and see.
the experimental celery did have leaves
an eventually , the red went through the stalks and into the ' veins '
of the leaves
I remember this vividly , and checked every day.
carrots wee not mentioned as a subject