Refer to the given flow chart and select the incorrect statement regarding W, X, Y and Z.
A W could be abundant in RBCs whereas X could
be absent in xylem parenchyma.
B Y provides energy during starvation whereas Z
provides surface for synthesis of steroid hormones.
C W helps in synthesis of proteins whereas Y secretes
enzymes which are used for breaking limiting
membrane of eggs.
D X could provide intermediates for the synthesis of
certain steroids and cytochromes whereas Z stores
calcium for release during muscle contraction.