taxonomy is the science of classifying and naming organisms. taxonomy
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Life cycles in the Kingdoms
Taxonomy is the science of classifying and
naming organisms.
Taxonomy
The two-word
scientific name for every species on Earth
Binomial Nomenclature
Homo sapien (humans) Homo is its genus Sapien is its species
Genus and species
Sula sula Dicrurus fortificus Tyrannus melancholicus Elanoides forficatus
Which would be closely related to Tyrannus
fortificus?
One way is by an organism’s life cycles, or
how it grows and reproduces
How do we define kingdoms?
Binary fission, which
is essentially cloning This is
asexual reproduction
Archaebacteria and Eubacteria
If the environment is too harsh, the bacteria
can form spores or cycsts Both are forms of dormancy (remember that
word?), which means life processes slow and no reproduction occurs
Harsh environments
If bacterium reproduces ever 20 minutes, how
many daughter bacteria will exist after 2 hours?
Thought Question 1
Significant decomposers (heterotrophs) They have many different ways of reproducing
1. Asexual reproduction 2. Sexual reproduction
Fungi
Spore-flinging They grow where they land
and extend string-like structures called hyphae into the soil or whatever food source on which they land
Asexual reproduction in fungi
When two hyphae meet, the cells fuse like in
plant or animal fertilization They then form sporgania to fuse the nuclei The sporangia undergo meiosis and form
haploid spores, which the fungus releases to grow again
Sexual reproduction in fungi
What does it meant to say that the fungus is
haploid? How does it differ from a diploid organism?
Thought Question 2
Yeast reproduce asexually
through budding- similar to binary fission, except the cell does not split in two
The genetic material is copied multiple times, then split off from the parent to create many new, genetically identical “babies”
Budding
These can include algae, mosses, ferns, and
flowering plants They have alternating haploid and diploid
stages of reproduction In every class the embryo is produced by the
fusion of gametes
Plants
If human embryos were triploid, how many
chromosomes would each cell have?
Thought Question 3