g.o.1 biological diversity is reflected in the variety of life on earth
TRANSCRIPT
Biodiversity
What does diversity mean? How can we represent “diversity” in a group of students?
“Biodiversity”, or “biological diversity”, refers to all living organisms on the earth. Definition for organism = an organism is any contiguous living
system (such as animal, fungus, micro-organism, or plant). In at least some form, all types of organisms are capable of response to stimuli, reproduction, growth and development, and maintenance of homeostasis as a stable whole.
Scientists study biodiversity in small groupings in order to track changes. Why would they want to track changes? What type of change would they track? What could be done to minimize these changes?
“Why do we have to learn this”
We’re all connected http://www.youtube.com/watch?v=9laQwaKOW
8s
Think about every action you have taken today…how many organisms were influenced or required for those actions to take place? Make a list…
WHAT CHARACTERISTICS DO ALL LIVING THINGS HAVE IN
COMMON
All living things have the following in common. They are:
Made up of cellsNeed energygrow and developReproduceHave adaptations
to help them survive
What is a Species?•A species is a particular group of organisms that have the same structure and can reproduce with each other.
• Of the 30 - 100 million possible different species of living things, there are over 1.5 million species of animals and 350.000 species of plants that have been identified by biologists.
• The most successful life form seems to be the insect.
What is an ecosystem?
An ecosystem refers to all the animals and plants found in one place, and the way they all live together.
Different plants and animals live in different ecosystems.
Different ecosystems can be close together.
Some animals belong to several ecosystems.
What are the Components Earth’s biodiversity?
Components of biodiversity:
• Genetic diversity – genetic variation within Geniusor species
• Species diversity – numbers of species within an ecosystem• Diversity among higher taxa – variation between genera, families, orders, etc.• Ecosystem diversity – variation among ecosystems, communities, landscapes
Are different groups of organisms equally diverse?Are different parts of the world equally diverse?
There is _________________________________ biodiversity in the northern Arctic region because
_____________________________________________________________________________________________________.
There is _____________________ biodiversity in the equatorial regions because
______________________
_____________________
_____________________
_____________________
_____________________
There is _____________________________ biodiversity in the southern Antarctic region because
_______________________________________________________________________________________________________.
Geography & Biodiveristy, booklet pg 12
Biological Diversity Classification
The science of classifying organisms is called taxonomy
The “father of modern taxonomy” was Carolus Linnaeus (Carl von Linné)
Organisms are grouped into “taxa” based on their similarities to each other
1707-1778
5 Kingdom Classification System:
Monera: all prokaryotes (bacteria)
Protista: single-celled eukaryotes (protists)
Fungi: multi-cellular heterotrophic sessile eukaryotes
Plantae: multi-cellular autotrophic sessile eukaryotes
Animalia: multi-cellular heterotrophic motile eukaryotes
Classifying Organisms
Kingdom
Phylum (& Subphyla)
Class
Order
Family
Genus
Species
Come up with your own mnuemonic
Human Classification
Kingdom – Animalia
Phylum – Chordata
Class – Mammalia
Order – Primates
Family – Hominidae
Genus – Homo
Species - sapien
Classifying cousins…booklet pg 15
Kingdom: Animalia
Phylum: Chordata
Class: Mammalia
Order: Carnivora
Family:Canidae
Genus:Canis
Species: C. lupus
Kingdom: Animalia
Phylum: Chordata
Class: Mammalia
Order: Carnivora
Family:Canidae
Genus:Canis
Species:Canis lycaon