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Plant Morphology Bacillariophyceae & Phaeophyceae

Terms in this set (38)

Stramenopiles AKA ...
Heterokonts
Stramenopiles/Heterokonts 2 flagella are ...
1 long w/ distinctive hairs
1 short and smooth
Class: Bacillariophyceae AKA ...
Phylum: _____
Diatoms
Heterokontophyta
Approx. ###,### species of diatoms
100,000
Diatom distribution/habitat:
hot spring effluent
soil
under marine ice
freshwater
1L ocean water can have 1 million individuals
25% of global carbon fixation is due to ...
Diatoms
Primary source of food for marine and freshwater
Diatoms
Diatom's two part cell walls
Frustules
Pennate diatoms
bilaterally symmetrical, 2 large chloroplasts
Centric diatoms
radially symmetrical, more abundant in large lakes and marine habitats, many small chloroplasts
Raphe
on diatoms, allows movement by mucilage
Diatom Reproduction
Asexual mitotic division, size decrease over time or environment changes = sexual reproduction needed
Diatom Sexual Reproduction
Diplontic gametic, centric are oogamous, pennate are isogamous
May form resting stages
Diatomaceous Earth
Fine, crumbly silica frustules
Diatom uses:
Abrasives, explosives, insecticide, fillering, swimming pools, antibiotics, beer, wine, sugar, highway line paint
Diatom pigments (5)
Chlorophyll a, Chlorophyll c, fucoxanthin, carotenes, xanthophylls
Diatom morphology:
unicellular/multicellular?
colonial/noncolonial?
membranous/filamentous?
unicellular
colonial
filamentous
A diatom's _____ have brownish _____ that contain pigments chlorophyll a, c, and fucoxanthin.
protoplast, plastids
Diatom storage
lipids, chrysolaminarin stored in vacuoles
Diatoms are autotrophic/heterotrophic/both?
Both; some pennates are heterotrophic
Some diatoms produce a neurotoxin _____ and cause _____ _____ poisoning
domoic acid, amnesic shellfish
Class: Phaeophyceae AKA ...
Brown Algae
Brown algae mostly live in ...
Marine and polar waters
Rockweeds are brown algal of Order: ...
Fucales; Fucus (air bladders)
Kelps are large brown algae of Order: ...
Laminariales
Sargassum are brown algae of Order: ...
Fucales; (air bladders)
Brown algae most basic form is ...
Thallus (sing.); Thalli (plur.)
Brown algae pigments (4)
Chlorophyll a, Chlorophyll c, carotenoids, fucoxanthin
Brown algae storage carbohydrate
laminarin in vacuoles
Ectocarpus: pyrenoids/no pyrenoids?
Pyrenoids
Laminaria: pyrenoids/no pyrenoids?
No pyrenoids
Kelps and rockweed important mucilaginous, intercellular material called: ...
Algin
Algin uses
Stabilizer, emulsifier, paint, paper coating, icing, candy, marshmallows, mayo, cheese, cosmetics, suntan lotion, soaps, sausage casings
Mannitol in brown algae is a _____ _____ that is translocated along with amino acids.
primary carbohydrate
Brown algae reproduction:
Haploid/Diploid/Alternation of Generations?
Alternation of Generations
The type of alternation of generations reproduction that brown algae utilize is called: ...
Sporic meiosis (see Ectocarpus, Laminaria, Fucus life cycle)
Brown algae was an important source of:
Potassium and Iodine
_____ is the result of lack of iodine in diet.
_____ increase in size, then shrivels - stops making enough hormones
Goitre
Thyroid
THIS SET IS OFTEN IN FOLDERS WITH...