Its only important because scientist need info to be able to find there conclusion.i hope this helps.
Answer:
Herbaceous stems lack woody tissue and growth rings unlike woody xylem. Wood is a composite of cellulose fibers which require the the process of phloem in the bark to contain nutrients unlike herbaceous stems that rely on xylem that contains vessel and vascular elements.
Explanation:
The ulnar nerves innervate
muscles in the frontal part of the forearm, and in the hand. In the anterior forearm,
the well-developed branch of ulnar nerve provisions two muscles: Flexor carpi
ulnaris which stretches and abducts the hand at the wrist; and Flexor digitorum
profundus which stretches the fingers.