Palm is a monocotyledonous plant, yet it increases in girth. Why and how ?
$\Rightarrow$ Though palm being a monocot plant it shows secondary growth. eg. Its girth increases. The reason for the same is division and expansion of parenchymateous cells of ground tissue. Thus repeated division, increase the girth of stem. This type of growth is called diffused secondary growth.
In plants like Nymphaea which is attached emerged hydrophyte, the stomata are present on
Commercial cork is obtained from
Aerenchyma is found in
Which tissue is derived from plerome
Vascular tissue is well developed in