Stele in dicot stem is

Velamen is needed for

Assertion : Thick cuticle is mostly present in disease resistant plants.
Reason : Disease causing agents cannot grow on cuticle and cannot invade the cuticle

Palm is a monocotyledonous plant, yet it increases in girth. Why and how ?

Which one of the following is well-developed present in hydrophytes?

Tunica corpus theory was proposed by