2. - Heterokonts is the name of a motile life cycle stage when cells possess
two different flagella that are shaped differently.
- Line of eukaryotes that has more than 100,000 species. These include:
http://comenius.susqu.edu/bi/202/CHROMALVEOLATA/HETEROKONTAE/CHRYSOPHYTA/Ochromonas1_2_3_4-silicaseccidisk.jpg
4. -Oomycetes
Ex: Phytopthora (Irish potato famine)
http://en.wikipedia.org/wiki/
File:Prei_papiervlekkenziekte_Phyto
phthora_porri_on_Allium_porrum.jpg
Ex: Pythium (seed rot)
These two oomycetes are specifically water moulds.
5. Why are they important?
- Heterokontophyta are in the Kingdom Chromalveolata.
-Chromaveolata contain a lot of diatoms which create oxygen via
photosynthesis.
- Kelp creates underwater habitats for marine life.
- Kelp is also used as a food source for many marine and costal
organisms.
- Algin in brown algae is used to thicken ice cream.
- Silica in diatoms shells are used in reflective paint, toothpastes,
and filters for pools, fish tanks, beer, etc.
http://dsc.discovery.com/tv/how-stuff-works/images/ http://i131.photobucket.com/albums/ http://evanescentthoughts.files.wordpress.com/
beer.jpg p289/synnel184/IceCream-2.jpg 2009/05/voc-free-paint-tip-lg.jpg
6. Misc. Information:
-Most heterkontophyta that can photosynthesize contain
chlorophyll a and c.
-The pigment fucoxanthin is what gives brown algae its color.
- Heterkont algae were considered in the kingdom Plantae but is
now in the kingdom Protista.
-Oomycetes was considered to be related to fungus but data
suggests that they are heterkonts.
- Heterkonts are also named stramenopile(original: straminopile)
from the Latin word stramen meaning made of straw.
-Note: many people liked the name stramenopile as
opposed to straminopile and use it more often. However,
both words are acceptible.
6
7. Works Cited:
"Heterokont. " Wikip edia . N.p., 04/02/2010. Web. 30 Mar 2010.
< htt p:/ / en. wikipedia.o rg/wiki/He te rokont >.
