Euglenophytes
What are Euglenophytes?
 Euglenophytes are plantlike protists that have
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two flagella and no cell wall.
Eukaryotic
Organisms from phylum Euglenophyta
Closely related to animal like flagellates
(zooflagellates)
Typical size: 50 micrometers
Euglenophytes
Structures
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Eyespot
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Chloroplast
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Discharges water from the cell to avoid
bursting
Nucleus
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ATP production
Contractile vacuoles
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Used to store carbohydrates
Mitochondria
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Maintains shape
Tough and flexible
Paramylon bodies
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Usually come in pairs
The longer one propels the flagella
through the water
Pellicle
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Used for photosynthesis
Flagella
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Used to locate sunlight
Contains DNA
Cytostome
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A “mouth” used for food ingestion when
there is lack of sunlight
Euglenophytes
Habitat
Nutrition
 Euglenophytes typically live
 Capable of photosynthesis
 They use their eyespot and
chloroplasts.
in freshwater all throughout
the world.
 When there is lack of sunlight,
they eat bacteria or other
material through their
cytostome
 Can store carbohydrates in
small storage bodies
Euglenophytes
Reproduction
 Euglenophytes
reproduce asexually.
 They go through a
process of longitudinal
binary fission
 Longitudinal binary
fission starts from the
front end of a cell.
Euglenophytes
Ecology
 Often found in locations having lots of mineral and
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organic nutrients. This means it has a lot of plants and
algae (eutrophic).
Ditches and ponds near cow pastures, hog lots, chicken
farms, etc.
Thick green or red scum on water surfaces is often
from euglenoid colonies
Mud flats (another nutrient-rich environment) usually
have euglenoids
Very few euglenoids have been grown in axenic
culture(a pure culture of microorganisms) , and
euglenoid culture media are generally very nutrient rich
Euglenophytes
Examples
 Euglena
 Most species of Euglena have photosynthesizing
chloroplast within the body of the cell, which enables them
to feed themselves (autotrophy). However, they can also
take nourishment heterotrophically.
 Trachelomonas
 They have shell-like covering called lorica, which can be
spherical, elliptical, and pyriform (pear-shaped) and have a
diameter within the range 5 to 100 µ. The lorica surface
colors would fall around hyaline, yellow, or brown.
 Phacus
 light-green and propel them selves by gyrating their body.
They have a flagellum which is often a long as their bodies.
http://en.wikipedia.org/wiki/Trachelomonas
http://www.discoverlife.org/mp/20q?search=Euglenophyta
http://www.infoplease.com/encyclopedia/science/euglenophyta.html
http://encyclopedia2.thefreedictionary.com/Euglenophyta
http://www.life.umd.edu/labs/delwiche/PSlife/lectures/Euglenophyta.html
http://www.jochemnet.de/fiu/bot4404/BOT4404_14.html
http://medical-dictionary.thefreedictionary.com/axenic+culture
http://www.slideshare.net/karina2260/euglenophyta-7590294
http://www.encyclopedia.com/topic/Euglenophyta.aspx
http://en.wikipedia.org/wiki/Euglenid, http://www.infoplease.com/cig/biology/protists.html
http://www.chacha.com/question/what-are-two-methods-euglenophytes-can-use-to-obtain-energy
Prepared by: CH10, LORENZO, Andrei Felix
CH,11, LUZENTALES, Nathaniel
CH30, YOROBE, Jesa Lourdes
II Champaca