Few biology question? mono/dicot

1) What conducting tissue is near the epidermis in monocot stems? How about dicot stems?

Dicot stems the phloem is closest to the epidermis in young plants. As they get older and become woody the epidermis disappears.

Monocot stems have their vascular bundles (xylem and phloem) scattered through out the stem, so they are both close to the epidermis.