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Silurian
Plants first made their appearance on land in this era
Club mosses, lycophytes
Comprised huge forests in the Carboniferous Period, eventually many became compressed into coal, one of the first land plants
True branching roots, microphylls, vascular system
Novel traits of lycophytes
Tracheids
Principal water-conductors in the xylem
Phloem
Brings products of photosynthesis from sites of production to sites where they are used or stored
Horsetails
15 species, can be common in moist areas Gametophyte is small, sporophyte is big  Secondary reduction of leaves Flagellated gametes need to swim
Ferns
Common in moist areas Gametophyte is small, but still photosynthetic. Sporophyte is big Gametes have flagella and need water
Megaphylls
Large leaves; innovation of the fern ancestors
Gymnosperms
Naked seed plants (ex: conifers)
Pollen
Male gametophyte of seed plants
Angiosperms
Covered seed plants, fruit/flowers
Fruit
Swollen ovarian tissue surrounding the seeds
Absorptive heterotrophy, chitin in cell walls
2 synapomorphies of fungi
Saprobes
Type of fungi, take up nutrients from nonliving organic matter, earth's garbage disposal
Parasitic fungi
Type of fungi, take up nutrients from parasitic interactions, varying dependence on host
Predatory fungi
Type of fungi, can make use of adhesives or constricting rings
Lichens
Symbiotic mutualism between fungus and photobiont (the fungi is usually ascomycota and the photobiont is usually cyanobacteria or green algae)
Microsporidians
Highly reduced fungi, intracellular parasites of animals, likely an outgroup within the fungi clade
Sac fungi
Ascomycota
Club fungi
Basidiomycota
Dikarya
Include club and sac fungi
Cyhtrids
Fungi, paraphyletic group, responsible for amphibian population crashes
AM
Infected 90% of plants worldwide, exchange nutrients with the plants, plant-fungi partnership
Cocci (sperical), bacilli (rod-shaped), spirilla (spiral)
3 prokaryote shapes
Binary fission
Asexual reproduction in prokaryotes, lack of genetic variation from mother to daughter cells (unless there are mutations)
Conjugation
Genetic exchange between two prokaryotic individuals, separate from reproduction
Phage conversion (transduction)
Genetic exchange mediated by a phage (virus)
Transformation
Damaged cell leaks DNA, incorporated into another genome
Gram stain
Can determine if cells are gram positive or negative
Leeuwenhoek
Found spirochetes on his teeth in a biofilm (ewwwww)
Chlamydias
Most common STD in US, comes in two forms
Cyanobacteria
Blue-green algae, chlorophyll a
Extremophiles
Archaea that live in extreme environments (include acidophiles and halophiles)
Methanogens
Arachaea that contribute to global warming, anaerobic
Lateral (horizontal) gene transfer
Gene transfer across entire taxa, clouds phylogeny among prokaryotes
Flexible cell membrane, infolding, microtubules, mitochondria, chloroplasts
Major eukaryote innovations (5)
Endosymbiosis
Incomplete phagocytosis, resulted in membrane-bound organelles of eukaryotes
Chloroplasts
Derived from cyanobacteria, synapomorphy of plantae
Brown algae
Secondary endosymbiosis led to the chloroplasts in ____
Dinoflagellates
Tertiary endosymbiosis led to the chloroplasts in _____
Bilateral mating
Conjugation and other processes that lead to genetic exchange within a bacterial species
Alveolates, stramenopiles, excavates, amoebozoans, choanoflagellates
Protists include these 5 taxa
Ciliates
Covered in cilia, endosymbionts
Dinoflagellates
Two flagella, tertiary endosymbiosis of chloroplast, bioluminescence
Plasmodium
Intracellular parasites in the alveolate group
Stramenopiles
2 unequal flagella, include brown algae and diatoms
Diatoms
Major components of plankton
Excavates
Mitochondria reduced or absent in some groups, associated with anaerobic conditions
Amoebozoans
Have lobose pseudopods
Loboseans
Single celled amoebozoans
Slime molds
Multicellular amoebozoans, can get very large
The great oxidation event
Brought the atmospheric O2 to a recognizable level, caused by the origin of photosynthesis
Glaucophytes
Single-celled plants
Red algae
Plant, phycoerythrin, enhance the formation of coral reefs, no peptidoglycan
Green algae
Plants, paraphyletic
Land plants
Protected embryo, cuticle, multicellular sporophyte
Liverworts
Simplest land plants, leaf-like sheets of tissue
Gametophyte
1n
Sporophyte
2n
Alternation of generations
The life cycle has both diploid and haploid stages
Mosses
Plant, first to have stomata and waxy cuticle

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