2 Bacteria 2 There are few environments free of microbes. Microbes can grow: –in environments...

Bacteria

• 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

Protists

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 -

Moss Lifecycle

Anthredia

Archegonia

Male gametophyte

Female gametophyte

sporophyte

Protonema

Fern Lifecycle

GymnospermLifecycle

Angiosperm Lifecycle

2 Bacteria 2 There are few environments free of microbes. Microbes can grow: –in environments...

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