Vascular bundle with cambium is called
Closed
Open
Exarch
Endarch
Vascular cambium of stem is
In a stem which is covered by periderm and in which stomata are absent, gaseous exchange takes place through
Trunks of some of the aged tree species appear to be composed of several fused trunks. Is it a physiological or anatomical abnormality ? Explain in detail.
Which will decay faster if exposed freely
Normal secondary growth occurs in