Euglenophyta

Euglenophyta
It consisting of mostly unicellular aquatic , live in freshwater; many have flagella and motile , The outer part of the cell consists of a firm but flexible layer called a pellicle, or periplast .
Division : Euglenophyta
Class : Euglenophyceae
Order : Euglenales
Family : Euglenaceae
Genus : Euglena
: Phacus
Euglena

• Live in fresh water,brakish water,muddy soil .
• Pigments chlorophyll a,b ; ?-carotene .
• Euglena chloroplasts contain pyrenoids, used in the synthesis of paramylon, a form of starch energy storage enabling Euglena to survive periods of light deprivation , Food reserve : paramylon (? -1,3 glucose polymer )
• Cell wall : pellicle not cell wall .
• Growth form : unicellular flagellate All Euglenoids have two flagella rooted in basal bodies located in a small reservoir at the front of the cell. In Euglena, one flagellum is very short, and does not protrude from the cell , while the other is relatively long (2 flagella only 1 emerging from the gullet) .
• Euglena possess a red eyespot .
• Euglena reproduce asexually through binary fission, a form of cell division , sexual conjugation are rare .
Phacus




• It is pyriform with plastids, flattened cells, leaf-shaped, folds or grooves running helically or longitudinally, many species with a long posterior spine, many twisted, flagella, eyespot and flagellar swelling as in Euglena; chloroplasts usually small, discoid, numerous, without pyrenoids .