Give common characteristics of green algae or Chlorophyceae.

(N/A) $\rightarrow$ Structure and characteristics:
$\rightarrow$ The plant body may be unicellular,colonial,or filamentous.
$\rightarrow$ They are usually grass green due to the dominance of pigments chlorophyll $a$ and $b$.
$\rightarrow$ The pigments are localized in definite chloroplasts. The chloroplasts may be discoid,plate-like,reticulate,cup-shaped,spiral,or ribbon-shaped in different species.
$\rightarrow$ Most of the members have one or more storage bodies called pyrenoids located in the chloroplasts.
$\rightarrow$ Pyrenoids contain protein besides starch.
$\rightarrow$ Green algae usually have a rigid cell wall made of an inner layer of cellulose and an outer layer of pectose.