Algae Quiz (25)

Lab quiz: Thursday 11/20Lab Exam: Thursday 12/6

Cellular organization

1. unicellular2. filamentous: chains of

cells attached end to end

3. colonial: groups of algae attached to each other in nonfilamentous manner

Chlamydomas

• single cell• flagella• green algae• similar to land plants– has chlorophyll a and b– cell walls made of

cellulose

• stigma

Chlamydomas

• reproduce via mitosis

Cladophora

• branched, filamentous

syngamy

• pairing and fusion of morphologically similar haploid gametes to form a diploid zygote

Spirogyra

• Spirogyra• Spirogyra is a genus of

filamentous green algae of the order Zygnematales, named for the helical or spiral arrangement of the chloroplasts that is diagnostic of the genus. Scientific name: Spirogyra

• Rank: Genus• Higher classification:

Zygnemataceae

Spirogyra

• reproduce by conjugation– conjugation tube

Volvox

• green alga• oogamy• daughter colonies

oogamy

• motile sperm flows to non-motile eggs to form diploid zygote

• Volvox

brown alga

• phylum: phaeophyta• fucoxanthin• conceptacles• oogonia• antheridia• examples: Macrocytis,

Sargassum

red algae

• phylum rhodophyta• phycobilinds in plastids

• Polysiphonia, Porphyra

diatoms

• phylum bacillariophyta• unicellular algae• chlorophylls a & c• cell wall: silica

dinoflagellates

• phylum dinozoa• unicellular• two flagella• red tide• bioluminescent

• Peridinium

dinoflagellates

• phylum dinozoa• unicellular• two flagella• red tide• bioluminescent

• Ceratium

euglenoid

• phylum: euglenida• unicellular algae• chlorophyll• NO cell wall• pellicle: made of

protein• paramylon granules:

food reserves are stored