From the plants given below, select the monocots having secondary growth in their stem
Yucca
Wheat
Aloe
Both ($a$) and ($c$)
Druse is a crystal or deposit of
Vascular bundles are conjoint, collateral, endarch and lack cambium between xylem and phloem in all, but not in
Complex tissue includes
Anatomically fairly old dicotyledonous root is distinguished from the dicotyledonous stem by
Medullary vascular bundles are present in