retain the learning slightly better than the tail end did. Not everything goes as planned so there were some experiment where the planarian was lost or it died. Some planaria did not retain the information before it was cut and those were not used in the results. If there was any confusing information it was not used as well. Any planaria that was dropped or if they were missing a head or tail that was not used. After the results were calculated it showed that 40 of the head that were used were able
Premium Psychology Experiment Scientific method
and freshwater. (Biggs‚ A.‚ Gregg‚ K.‚ Hagins‚ W.‚ Kapicka‚ C.‚ Lundgren‚ L.‚ Rillero‚ P.‚ 2002) The planarian has a threebranched digestive cavity. (Alvarado‚ 2004) Planaria range from 1/8 to 1 inch. (Alvarado‚ 2004) The planarian can be cut into many pieces and each piece will grow into a new flatworm. (Alvarado‚ 2004) Planaria produce asexually‚ therefore the planarian pretty much clone themselves. (Alvarado‚ 2004) The planarian has two nerve cords that run the length
Premium Animal Petri dish Agar plate
Instructor Biology 1111 4-5 Lab Topic 4: Microscopy Elodea Cells at ___X Elodea Cells at ___X Report Sheet—Lab Topic 4 1. Draw and label each of the organisms available. Cheek Cells at ___X Cheek Cells at ___X Name _______________________________ Date_____________ Instructor ___________________________ Section___________ _________________________ 4-6 Lab Topic 4: Microscopy 2. Fill in the following table: Compound Microscope Dissecting Microscope Types of Light Available Powers
Free Cell Microscope Cell wall
Chapter 32/33: Invertebrates Name _______________________ Period ___________ Date ____________________ NONCOELOMATE INVERTEBRATES (CH 32) Sponges are basal animals that lack true tissues 1. Sponges are in the phylum Porifera. This group is now known to be polyphyletic‚ and all sponges belong to either phylum Calcarea or phylum Silicea. They are the simplest animals and lack true tissues. Label the following: pores‚ spongocoel‚ epidermis‚ amoebocytes‚ choanocyte‚ flagellum‚ spicules
Premium Annelid Cnidaria Flatworm
There is no separate exit‚ so undigested food has to leave by the mouth. There is no system within the body to distribute oxygen‚ this constrains flatworms to be flat‚ as they must respire by diffusion and no cell can be too far from the outside. Planaria are quite active‚ moving by contraction of muscle fibers that are oriented in different directions‚ in a manner similar to how we move our tongues around. The direction of movement is controlled by the nervous system‚ which consists of an anterior
Premium Flatworm
In this experiment‚ we analyzed the regeneration of planaria over a two week period. We chose to use flatworms due to their ability to grow into a new animal if cut in half or several pieces. This reproductive ability to regenerate is called fission and occurs in flatworms due to their embryonic stem cells called neoblasts. We obtained the flatworms used in this experiment by first placing a few drops of spring water on a petri dish so that the flatworms will be able to survive a couple of weeks
Premium Gene Pregnancy DNA
them their regenerative qualities . Planarians reproduce A-sexually so they can basically clone themselves ‚ Because they reproduce A-sexually planaria and their genomes can be created over and over again . Planarians are tiny flatworms that live in freshwater and marine environments and on plants all over the world . the cells that are in planaria are ready to transform into whatever tissue the planarian needs to regenerate their simple bodies and few tissues make planarians easy to study
Premium DNA Gene Genetics
AP Biology Reading Guide Fred and Theresa Holtzclaw Chapter 33: Invertebrates Name _______________________ Period ___________ Chapter 33: Invertebrates Chapters 31‚ 32‚ and 33 should be considered as a single unit‚ and you should try to put all of them together in a single conceptual framework. Due to the scope of our course‚ you are likely to see more general questions on individual phyla. For each of the phyla that we highlight in the questions that follow‚ try to know the characters that are
Premium Annelid Phylum Arthropod
BIO 2135 - Animal Form and Function Midterm examination Worth either 10% or 15% of your final grade Tuesday February 9‚ 2010 a) Place your name and student number in the space provided below. Be sure that your name is on the top of each page because the exam will be separated to facilitate marking b) Circle the lab section for your lab. c) Check to be sure that your exam is complete with a total of 12 pages including this one d) Answer all questions in the space provided on the exam. Do not transfer
Premium Cnidaria
in the world. they possess bilateral symmetry and are made up of segments that look like little rings stacked next to each other. Earthworm Reproduction-simultaneous hermaphrodites‚ meaning worms have both male and female reproductive organs. Planaria Reproduction-hermaphroditic-possess both male and female sex glands. planarian cannot fertilize its own eggs; eggs must be fertilized by sperm of another planarian. In another method of reproduction‚ a planarian constricts behind the pharynx and
Premium Reproduction Flatworm Reproductive system