In which of the following is the cortex not differentiated into the hypodermis and general cortex?

Medullary rays are seen in

Describe the internal structure of a monocot (Maize) stem.

The transverse section of a plant material shows the following anatomical features: $(a)$ the vascular bundles are conjoint,scattered,and surrounded by sclerenchymatous bundle sheaths,$(b)$ phloem parenchyma is absent. What will you identify it as?

Which of the following is absent in the primary and secondary structure of the stem of $Pinus$?

Which of the following is not true for the vascular bundles of monocotyledonous stems?