I will try this again. I have to identify the verb and tell if it's transitive or intransitive.

It is related to wheat, oats, and barley.

is related=intransitive

In Japan the hollow stems serve as water pipes.

serve=intransitive

2 answers

Both are correct!
IS this a Transitive or intransitive sentence:
More than 500 kinds of bamboo grow in the tropics.