Green Algae Domain Eukarya Kingdom Plantae Phylum Chlorophyta
- Slides: 18
Green Algae Domain Eukarya Kingdom Plantae Phylum Chlorophyta
Looking Back at Bio 115 The Organism as a Unit of Life Cellular Structure (cell = unit of life)…one or many! Metabolism = Homeostasis (PSN, Resp, N 2 fix, ferment, etc. ) Growth = irreversible change in size Reproduction…failure = extinction Acclimatization-short term responses = behavior Adaptation-long term responses = evolution
Lumpers Shifting Kingdoms Plantae Protista Plantae Splitters 2 3 5 6 8 Bacteria Bacteria Archaebacteria Archaebacteria Archezoans Archezoans Euglenoids Euglenoids Chrysophytes Chrysophytes Green Algae Green Algae Brown Algae Brown Algae Red algae Red algae Slime Molds Slime Molds True Fungi True Fungi Bryophytes Bryophytes Tracheophytes Tracheophytes Protozoans Protozoans Myxozoans Myxozoans Multicellular Animals Multicellular Animals
Original Cell Kingdom Plantae is a clade Extinct h t i w ly e im s on T ng ryote o L ka Pro ae ue Tr i ng Fu he op hy Sl im t e M es M yx old oz s oa ns M A ult ni ic m ell al ul s ar yt es ph yo A lg e ae A lg s te hy ga al en ac Tr Br re G d Re n ow Br so p ry Ch Ba ct A eria rc h A aeb rc ac he te Eu zoa ria gl ns en oi ds Pr ot oz oa ns Extant How Many Kingdoms? 8 5 3 2 1
Plants as a Clade • Photosynthetic Organisms: Unifying features § Cellulose walls glued together with pectin § Chlorophyll a and b, xanthophylls, carotenoids § Store starch § Standard plant chloroplasts, mitochondria, golgi, etc. § Most have Diplohaplontic (sporic) life history § Most have Oogamous gametes
Chlamydomonas flagella http: //www. unap. cl/~cbrieba/common/chlamydomonas. jpg contractile vacuole eyespot cellulosic wall cell membrane nucleus mitochondria cytosol starch http: //universe-review. ca/I 10 -23 -chlamydomonas. jpg chloroplast pyrenoid
Chlamydomonas cells of opposite mating type join in syngamy to form a zygote which develops a thick wall as a hypnospore. Upon return to better conditions, the zygote undergoes meiosis and releases flagellated cells of both mating types. http: //www. biology. wustl. edu/faculty/images/goodenoughcaption. jpg http: //www. isis. de/members/~ralfwagner/Bilder/Chlamydomonas_spec_Zygote. jpg
SYNGAMY mitosis gametes zygote gametangia differentiation is it gametic? (diplontic) http: //www. isis. de/members/~ralfwagne r/Bilder/Chlamydomonas_spec_Zygote. jpg http: //www. biology. wustl. edu/ faculty/images/goodenoughca ption. jpg Life Cycle of Chlamydomonas Gametophyte 1 N 2 N germination mitosis differentiation Sporophyte differentiation mitosis germination differentiation sporangium spores mitosis sporocyte definitely zygotic (haplontic) http: //www. isis. de/members/~ralfwagne r/Bilder/Chlamydomonas_spec_Zygote. jpg http: //www. unap. cl/~cbrieba/co mmon/chlamydomonas. jpg MEIOSIS
Ulva lactuca thallus http: //bio 59000. free. fr/Photosbio 59000/Biovegetale/Algues/Ulva%20 lactuca. gif
Ulva life cycle There are three isomorphic thalli: Some species of Ulva are anisogamous. isogametes syngamy + – Gametophytes + 1 N 2 N zygote settles on substrate Sporophyte – settle on substrate + – Since they are motile, + they are also called – zoospores. The meiospores made by the sporophyte are of two mating types. holdfast sporocyte meiosis The life cycle is: √ sporic: diplohaplontic gametic: diplontic zygotic: haplontic
Codium http: //massbay. mit. edu/exoticspecies/exoticmaps/images/codium_big. jpg
The life cycle is: sporic: diplohaplontic √ gametic: diplontic zygotic: haplontic Codium Life Cycle syngamy zygote 1 N 2 N Sporophytes anisogametes 2 sexes holdfast sporangium sporocytes zoospores meiosis
Oedogonium thallus http: //www. plingfactory. de/Science/Gru. Kla. Oeko/Teichleben/Algen/Oedogonium%20 sp. . jpg
Oedogonium Here the filaments are out of focus. The asexual zoospore is in focus. http: //www. botit. botany. wisc. edu/images/130/Chlorophyta/Oedogonium_Images/Zoospore_MC. low. jpg
Oogonium http: //www. rbgsyd. nsw. gov. au/__data/page/1810/Oedogonium. gif
Oedogonium This is the zoospore, or maybe it is the sperm. Both have the same look! http: //www. biologie. uni-hamburg. de/b-online/fo 44/18. jpg When both oogonium and antheridium appear on the same filament the alga is homothallic. http: //www. csupomona. edu/~jcclark/classes/bot 125/resource/graphics/g/chl_oedogonium. jpg
Oedogonium Life Cycle Since antheridia sperm and oogonia are on the same filaments, this species is homothallic. chemotaxis Vegetative zoospores can clone the gametophyte Zoospores settle down with a holdfast and grow into a filament. syngamy empty antheridia egg zygote (hypnospore) 1 N 2 N (in oogonium) The zygote divides meiotically to release 4 zoospores. meiosis This life cycle is haplontic (zygotic).
- Eukarya fungi
- Kingdom plantae domain
- Domain eukarya kingdom animalia
- Domain of kingdom fungi
- Domain eukarya kingdom fungi
- Which are all members of the domain eukarya
- All vertebrate animals are in domain
- Domain fungi
- Domain vs kingdom
- Domain of animalia
- Protista mobility
- Plantae
- Algae domain
- Algae classification
- Pithophora characters
- Algae-c
- What domain is green algae in
- Eukarya plantae
- Oedogonium domain