Biology, 11/07, Period 3

[blonde-doctor.livejournal.com]

Elliot looked like she was rather glad she wouldn't have to do a lot of talking this class period.

"Midterm projects," she said simply. "I hope you all enjoyed your breaks more than I did mine, and spent tons and tons of time on this so I won't have to give you a bad grade."

She gestured to a bin on her desk. "Your choices are to either just turn in the paper about your experiment's design or, for extra credit, spend this class period working on doing the experiment. (I know some of them won't fit into the hour, but you can assemble supplies or whatever.) Remember, if you want these are for the science fair in December."

"Next week, we're studying the biosphere."

Comments

Re: Turn in your experiment, Bio, 11/07

[izzyalienqueen.livejournal.com]

Hypothesis: (http://www.usc.edu/CSSF/History/2003/Projects/S1606.pdf) To determine the effect of light exposure during the dark light period given to a short night plant on the flowering patterns of the plant. Another purpose is to determine which color light best emulated the effect of the sun on the plant.

Method: 14 petunia plants will be divided them into experimental and control groups. There will be two control
groups that consist of two plants each. One control group will receive a dark period of 11 hours, less than
the critical night length, and the other control group will receive a dark period of 14 hours. The
experimental groups, also consisting of two plants each, will be exposed to red, yellow, blue, black or white light. The
experimental plants will be exposed to light during the first four hours of their night period, which will be controlled by putting the plants in plastic boxes at certain times.