Transcript
2
Bacteria
2
• There are few environments free of microbes. Microbes can grow:– in environments below 0oC,– in environments above 100oC,– at pH 1,– at pH 12,– with no oxygen,– on inorganics,– on gaseous nitrogen (and provide fixed N for
all other life)– on cellulose (and hence allow all herbivores
to exist).
Binary Fission
6
Protists
6
8
Definitions
• sporophyte - a 2n structure - diploid• gametophyte - a 1n structure - haploid• gamete - haploid, produced by meiotic
division• zygote - the union of two gametes (2n)• anthredia -
8
Moss Lifecycle
Anthredia
Archegonia
Male gametophyte
Female gametophyte
sporophyte
Protonema
Fern Lifecycle
GymnospermLifecycle
Angiosperm Lifecycle