After collecting last night's homework (UP pp. 15-26: your choice), and prepping both labs (#2 and #3, as shown on left) we started working on the labs.
Lab 1: Live Hydra
preface: answering the pre-lab questions
objective: observe how live hydra move around, and how hydra react to certain outside movements.
materials: Slide of preserved budding hydra, living specimens of hydra, conclave slides, microscopes, Dapnia or fish food
procedures: observe the hydra, tap it with a toothpick (record reactions), feed it food (record reactions)
Lab 2: Live Planaria
preface: The flatworm is the freshwater planarian, aka Dugesia.
objective: observe how live flatworms move around, and how hydra react to certain outside movements.
materials: Petri Dish with a flatworm inside, ruler, microscope, pipette
procedures: observe the flatworm, turn it over to see if it is right or left "handed" (record reactions), feed it food and see where it's mouth is located (record reactions)
*We did not do the "Planarian Reproduction Class Demo" listed on page 42.
Homework due 2/21/12
Next Scribe: Emma