SCIENTIFIC METHOD STATIONS Seed Germination Lab O Its

SCIENTIFIC METHOD STATIONS

Seed Germination Lab O It’s not easy to tell if a seed is “dead. ” Only if it fails to germinate when provided the proper conditions and any dormancy mechanisms are broken can we consider a seed “dead. ” Seed companies typically test the germination of seeds before sale. The results of these tests, the germination percentage, are typically provided on a seed packet. O The radish (Raphanus sativus) is an edible root vegetable of the Brassicaceae family that was domesticated in Europe in pre-Roman times. They are grown and consumed throughout the world. Radishes have numerous varieties, varying in size, color and duration of required cultivation time. There are some radishes that are grown for their seeds; oilseed radishes are grown, as the name implies, for oil production. Radish can sprout from seed to small plant in as little as 3 days.

PROBLEM STATEMENTS O Water O Is water essential for germination? O Does salt water affect seed germination? O Light O Is light or darkness essential for seeds to germinate? O Air O Do seeds need air to germinate? O Soil O Is soil necessary for seed germination? O Seed O How does the number of seeds affect germination rates? O p. H O How does acidity affect seed germination?

Now It’s Your Turn O Pre-Lab: Set Up Seed Germination O Write the Following parts of your lab report in class O Problem Statement O Introduction O Hypothesis O Procedures O Finish for HW. MUST BE COMPLETED in order to do lab next class.

Exit Ticket 1. Which of these inferences is BEST supported by observations of this animal? a. The animal spends much of its time digging. b. This animal usually hunts for food at night. c. This animal is herbivorous. d. This animal has poor hearing. 2. If a student needs to do research on heredity for a science project, which of these sources is the most reliable resource a. A weekly magazine. b. A newspaper tabloid. c. A national newspaper. d. A professional journal. 3. Hypothesis: If pine seeds are exposed to a forest fire, then there is an increase in their germination rate because their coat is thinner and quicker to germinate. Based on the hypothesis above, the most valid and reliable test of this hypothesis would include an experimental group of pine seeds that was recovered from a fire area and pine seeds that were 1. germinated after a fire. a. tolerant of fire. b. found before a fire. c. placed in a fire.