A Kind of Grass Has Evolved to Have Very Thick,reinforced

Multiple Choice

A kind of grass has evolved to have very thick,reinforced cell walls,which make the plant very resistant to chewing by panda bears.This characteristic is most likely due to the presence in the grass leaves of

A) plasmodesmata.
B) deposits of lignin.
C) deposits of cellulose.
D) large numbers of parenchyma cells.
E) a highly developed vascular system.