Diversity of ecosystems Taxonomy Just a fancy word
- Slides: 10
Diversity of ecosystems
Taxonomy! • Just a fancy word for the classification of living organisms
A family tree is a form of taxonomy
Why do we classify living organisms? • Because there’s a lot of living organisms on the planet and we need to know what they are, what they do, what they eat, etc. . . • We need to know this information just in case one of these living organisms ever tries an uprising against the human race. • Well. . . actually the taxonomy of living things helps us understand the relationship between species.
Species • Living organisms that share similar characteristics belong to the same species. • Every species is given a scientific name (usually in Latin) • Before scientists classify a new species they must study its anatomy, behaviour, and fossil ancestors.
Living organisms (p. 218)
The plant kingdom (p. 219) • Plants produce their own food • They cannot move on their own • Divided into five classes : • • • - Algae: (no roots, stems or leaves/usually live in water) - Mosses & Liverworts: (no roots, have stems & leaves, no channels for sap, live on ground/attach to objects) - Ferns: (no flowers to reproduce, do not produce seeds/reproduce via spores) - Conifers: (no flowers to reproduce, produce naked seeds usually inside a cone) - Flowering plants: (reproduce via flowers, produce seeds inside a fruit) Ferns, conifers and flowering plants have roots, stems and leaves. They have channels for conducting sap.
The animal kingdom (p. 222) • Invertebrates (They have no internal skeleton) • They do not produce their own food • They feed on plants or other animals • They can usually move on their own • The invertebrate groups consists of some of the following: • • • - Sponges - Worms - Cnidarians : (jellyfish, corals, etc. . . ) - Mollusks : (snails, slugs, octopuses) - Echinoderms : (starfish, sea urchins, etc. . . ) -Arthropods: (spiders, insects, crustaceans)
The animal kingdom (cont. . . ) p. 223 • • • Vertebrates have an internal skeleton They can be cold blooded (body temp changes with the temp of the environment) - Fish( breath under water), Amphibians (breath under/out water), Reptiles (breath only out of water) • Or • • Warm blooded (body stays the same regardless of the environment) - Birds and Mammals
In class work! • P. 223 • Questions 1 to 8 (do not write down the questions) • Use full coherent sentences!
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