taxonomy is the science of classifying and naming organisms. taxonomy

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

Angiosperms

If human embryos were triploid, how many

chromosomes would each cell have?

Thought Question 3