1what is the purpose of th parenchyma rays in woody stem 2wh

1)what is the purpose of th parenchyma rays in woody stem?

2)what strcuture in the secondary phloem and secondary xylem can be used to distinguish these tissue from the primary phloem and primary xylem ?

Solution

Que-1: 1)what is the purpose of th parenchyma rays in woody stem?

Answer:

Fusiform initials form a xylem & phloem vessels in woody stem whereas ray initials in woody stem are going to gives rise to “vascular rays of parenchyma” to transport minerals, water & sugars obtained from xylem vessels & phloem vessels. The purpose of the parenchyma rays (pith rays)in woody stem is to transport sugars and water minerals from root to shoot. This parenchyma is often referred as “totipotent” in woody stem so that it promotes secondary growth around the wood. This parenchyma tissue cells have involved in regeneration and wound healing of plant parts