Collenchyma differs from parenchyma in having

Which of the following is absent in most of the monocotyledons?

In angiosperms,the conduction of water takes place through ......... .

Vessels are different from tracheids in ...........

$I.$ 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:

Give scientific reasons: Vascular tissues are also called complex tissues.