|Plant Physiology (Biology 327) - Dr. Stephen G. Saupe; College of St. Benedict/ St. John's University; Biology Department; Collegeville, MN 56321; (320) 363 - 2782; (320) 363 - 3202, fax; firstname.lastname@example.org|
Light and Seed Germination
Some seeds require light for germination. In this exercise we will test to see if your seeds have a light requirement. We will set this up in the form of a typical experiment.
Question: Do our seeds have a light requirement for germination?
My seeds do not require light.
If my seeds do not require light, then the germination percentage for the seeds
planted in the light and dark should be the same.
|Table 1. Germination of ____________________ seeds after _________ days in a petri dish lined with filter paper and moistened with water.|
|Treatment||Total Seeds||Seeds Germinated||Seeds not germinated||% Germination|
It is likely that we will need to perform a statistical test to determine if our germination rates are significantly different. We will use a Chi square 2 x 2 contingency table test. This is available through the Concepts of Biology web site. We will discuss it in class.
|Null hypothesis (Ho):
What do you conclude about the effect of light on germination?
01/07/2009 � Copyright by SG