The+Girls

flat =Members= Autumn H, Holly W, Marissa M

1. Why is it better to have only 2 choices at each step instead of more? It would be harder to understand and the sentences would have to be more descriptive. 2. What problems did you encounter in using the dichotomous key? Be specific and discuss fully. The jolly rancher and the fireball were very similar so we just figured some jaw breakers come without a wrapper so we found the answer. 3. How did you resolve your problems in #2? We decided that jaw breakers sometimes come unwrapped. 4. Do classification keys go from general to specific characteristics or from specific to general characteristics? Explain why. They go from specific to general because the first thing they ask you is if it is chewy or hard, which is specific. The last thing they as if it is on a stick or not which is just general. 5. What does the first and second part of the Latin name represent in the scientific name of the organism? It describes the species of an organism. 6. Research Carolus Linnaeus and his contribution to modern classification. considered the founder of the binomial system of nomenclature. 7. What is a dichotomous key? (define) a tool that allows the user to determine the identity of items in the natural world. 8. What is binomial nomenclature? (define) the scientific system of naming each species of organisms with a Latinized name in two parts. 9. Briefly describe how classification has changed before and after Linnaeus. Research Aristotle... Aristotle classifiend animals according to their location, and plants according to their stems. Linnaeus classified organisms according to their form of structure using a seven level system. 10. List the order of classification groups from Kingdom down to species. 1.kingdom 2.phyium 3.class 4.order 5.family 6.genus 7.species

=**Daphnia**=



Daphnia, also called water fleas. They are found in the order Cladocera and are sometimes called Cladocerans. Daphnia are crustaceans and related to lobsters, crabs, and shrimp. They swim freely about and are form 1/2 to 3mm. long. They only have one eye. The Daphnia moves be beating its antennae which are moved by large muscles. Daphnia are slightly denser (heavier) than water so without active movement, they settle to the bottom. They feed on algae, protozoa, bacteria, and decaying organic material.The Daphnia's are heterotroph.

Resources: http://www.microscope-microscope.org/applications/pond-critters/animals/daphnia.htm