Page 136 - Demo

Botany
Botany—Lab Activities, continued
Plant Tropisms—Student Laboratory Kit
By: The Flinn Staff
Why do roots grow down and stems grow up? Can
plants be fooled into different growth patterns? In this series of labo- ratory experiments, students grow plants in unique ways, observe patterns of plant root and stem growth, and answer questions about plant tropisms. Corn and radishes are used as experimental organisms to study gravitropism and phototropism. Students will see surpris- ing results when both light and gravity are “pulling” on the plants. Materials include Petri dishes, corn seeds, radish seeds, modeling clay, pots, potting soil, watering trays, filter paper and complete laboratory instructions.
Complete for 30 students working in pairs to conduct two complete plant tropism experiments.
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Catalog No.
Description
Price/Each
FB1560
Plant Tropisms—Student Laboratory Kit
$64.25
Plant Tropisms—Student Laboratory Kit FB1560
Plant Symbiosis and Nitrogen Fixation Kit
This kit is designed to illustrate the relationships between bacteria, nitrogen fixation, nitrogen cycling and plant nutrient requirements. Your students will learn what farmers have known for some time—the role bacteria play and how plants benefit. Students plant grass seeds that they maintain on three different nutrient media and monitor rela- tive growth over a 25-day study period. The results will be dramatic.
Materials supplied for 24 students working in teams of three.
Conditions that Affect Transpiration— Guided-Inquiry Kit
By: The Flinn Staff
Interesting and informative guided-inquiry activity is great for inclu- sion in your plant or cell processes unit! The thorough background section and pre-lab questions will help guide students as they develop a hypothesis and then design and carry out an experiment to determine how different factors affect transpiration. Kit provides step-by-step instructions for building a potometer, a standard labora- tory device used to measure transpiration. The extensive Instructor’s Notes section describes many variables that were tested in our labora- tory and also gives sample results. Potometer materials, seeds, and the supplies needed to grow seedlings are included in the kit.
Complete for 30 students working in groups of five. A 0.001-g precision balance, support stands, clamps, as well as supplies to simulate wind, humidity, and light and dark conditions are required but not provided.
Plant Symbiosis and Nitrogen Fixation Kit FB0388
Catalog No.
Description
Price/Each
FB0388
Plant Symbiosis and Nitrogen Fixation Kit
$85.95
Conditions that Affect Transpiration—Guided-Inquiry Kit FB1931
Catalog No.
Description
Price/Each
FB1931
Conditions that Affect Transpiration— Guided-Inquiry Kit
$75.35
BOTANY continued on next page.