ABSTRACT
One Membrane
Euglenophyta
One anterior pantonematic flagellum
Nontubular fibrillar hairs
CER membrane not continuous with nuclear membrane
Outside chloroplast Within the chloro-Outside chloroplast plast stroma, often as a sheath around the pyrenoid
Condensed at mitosis Persistently condensed
Condensed at mitosis
Not persistent at mitosis
Closed nuclear and cytoplasmic
Polar rings; no true centrioles
Annular wall plus septal plug
- or + Not persistent at
mitosis
( + ) Nuclear and cyto-
plasmic or intranuclear
Centrioles
Phycoplast and phragmoplast
Persistent at mitosis (endosome)
Intranuclear and subspindles
Cleavage
* This table is based on the division of the algal phylla according to the number of membranes of chloroplast endoplasmic reticulum (CER)
Ultrastructural Characterization of Eukaryotic Algal Groups (continued)
Flagellum
Hairs
Chloroplast
Thylakoids/band
Girdle lamella
Storage products location
Chromosomes
Kinetochore
Nucleolus
Nuclear envelope
Intact
Polar gaps
Breaks down
Spindle type
Polar structure
Cytokinesis
One Membrane Dinophyta
Transverse pantonematic flagellum, located in a groove or a girdle and shorter posterior acronematic flagellum
Nontubular fibrillar hairs
CER membrane not continuous with nuclear membrane
- Within the chloro-
plast stroma, often as a sheath around the pyrenoid
Persistently condensed; attached to nuclear envelope
- Not persistent at
mitosis
+
Cytoplasmic tunnels
Cleavage
Two Membranes
Cryptophyta
Two anterior pantonematic flagella
Tripartite tubular hairs
?
