$T.S.$ of stem of Cucurbita can be identified from the $T.S.$ of sunflower stem by the presence of
Bicollateral vascular bundles
Conjoint vascular bundles
Scattered vascular bundles
Cambium in the vascular bundles
The undifferentiated cells are present in
Which would do maximum harm to a tree ? The loss of
In trees, the death of protoplasm is essential for a vital function such as
Bamboo and grasses elongate by the activity of
Stomatal apparatus consists of