cell wall: cellulose embedded in matrix of mucilaginous algin
mostly marine temperate or polar oceans
undergoes sporic meiosis
many call "seaweeds" KELPS
very limited differentiation
orders: Fucales and Laminariales
Basis of food webs, habitat for marine spp
examples: Laminaria, Rockweed fucus,
pigments: chl a & c
food reserve: starch
flagella: none or 2
cell wall: glycoproteins, non cellulose polysaccrides, cellulose
habitat: freshwater, marine, terrestrial
Many symbiotic: Gave rise to land plants
Classes: Chlorophyceae, Ulvophyceae
made of microtubules that are involved in cytokinesis
Why do we use scientific names?
1. It's universal
2. 2 different organisms could have the same common name.
3. Some organisms have more than 1 common name
4. Some organisms don't even have a common name
What is the Cladistic method of classification?
attempts to identify monophyletic groups or clades, has a unique feature or shared derived character slates.
(usually compared with one or more outgroups)
What is meant by "ploidy" level?
# of sets of chromosomes
This class of Fungi are important plant pathogens because they cause much damage, have the most complex life cycles, the spores occur on sori and most common example would be blister rust.
This type of fungi gets in air ducts in buildings, causing respiratory problems. Name phylum and the specific fungi.
Phylum: Deuteromycetes (AKA: Fungi Imperfecti)
Which phylum is found most often in the fungal component of a lichen?
This phylum of protista gave rise to land plants?
What is a plasmodiocarp?
hardened structure, collescence of plasmodium
Which phylum is plasmodiocarp found?
When do organisms undergo alternation of generations?
When environment is not healthy
Identify the similarities and differences between phylums Myxomycota, Dictyosteliomycota, and Oomycota.
Similarities between all 3: no photosynthetic pigments, all use glycogen for food reserve, and all can be found terrestrially.
Differences: Both dictyosteliomycota and oomycota have cellulose cell walls, while myxomycota has none on plasmodium. Both oomycota and myxomycota can have 2 flagella, but myxomycota is only in reproductive gametes,and oomycota is in male gametes and zoospores. Dictyosteliomycota has no flagella.
Compare and contrast: Bacillariophyta and chrysophyta.
Have either no, chl a & c, or fucoxanthin (carotenoid)
use chrysolaminarian as food reserve
no flagella typically
silica cell walls
found in freshwater
Bacillariophyta can have 1 flagella in the male centric form
chrysophyta has silica scales and can have cellulose
Chrysophyta is mainly freshwater
Compare and contrast: Dinophyta, Euglenophyta, and cryptophyta.
typically no photosynthetic pigment
when flagella present, typically 2 unequal size
All can be found in marine or freshwater
Euglenophyta and cryptophyta have no cell wall, dinophyta has a layer of vesicles under P.M
Cryptophyta needs COLD water
Dinophyta has peridinin (carotenoid) and chl a &c if photosynthetic pigments present, cryptophyta has phyrobilins or chl a & c, and euglenophyta has chl a & B or carotenoids