"Bast fibers" are obtained from which part of the woody stem?

Which of the following simple tissues form the soft parts of a plant body?

$I.$ These tissues are found as layers or patches.
$II.$ It consists of cells which are thickened at the corners.
$III.$ It often contains chloroplasts.
$IV.$ Intercellular spaces are absent.
$V.$ They provide mechanical support to growing parts of plants.
The above characters are attributed to:

Damaged sieve tubes are sealed by the deposition of:

What is incorrect for $vessel$?

Aerenchyma is found in