Curated OER
Leaf Stomata as Bioindicators of Environmental Change
High schoolers perform an experiment to determine the stomaltal index on the upper and lower epidermis of two species of leaves. Stomatal densities change in response to changing atmospheric levels of carbon dioxide and to annual rainfall.
Curated OER
Germination Inhibitors
In germination experiment learning exercise, students conduct the following lab activity. Kids determine the effects of another tomato on germinating seeds. Students answer the following questions to analyze their experiment.
Curated OER
Ecology
In this ecology instructional activity students complete a crossword puzzle that incorporates all of the ecological vocabulary in the word puzzle.
Curated OER
The Atmosphere and Flight
Students investigate evaporation and condensation, and apply the concepts to understanding cloud formation.
Curated OER
Tree Friends
Students are introduced to tree structure and use. They identify their special tree using all senses except sight. Students identify six different internal parts within a cross section of tree trunk (bark, phloem, xylem, cambium,...
Curated OER
Barnet Atmosphere Adv Word Search Puzzle
In this science and language arts activity, students analyze 30 words in a word bank which pertain to the atmosphere and weather. Students find the words in a word search. The meaning of the title is unclear.
University of Nebraska
University of Nebraska: Transpiration Water Movement Through Plants
This tutorial examines how water moves through a plant. Follow the pathway that water takes through plants from the roots to evaporation from cells in the leaves. Learn what controls rates of transpiration, how environmental conditions...
Ohio State University
Ohio State University: Plant Transpiration & Translocation
This is a good explanation of plant water balance issues and carbon fixing cycles. Transpiration processes are explained well with links to additional information.
TeachEngineering
Teach Engineering: Just Breathe Green: Measuring Transpiration Rates
Through multi-trial experiments, students are able to see and measure something that is otherwise invisible to them- seeing plants transpire. This information will allow students to consider how a plant's unique characteristics (leaf...
Open Door Team
Open Door Web Site: Feeding in Green Plants
Learn how plants absorb water through either root systems or vessels in their stems with this site. Also understand how important water is to the make up of the plant!
Science Education Resource Center at Carleton College
Serc: Investigating the Water Cycle: Using Plants to Study Evaporation
In this science activity, students investigate the water cycle by testing the water evaporated from leaves (transpiration). They investigate concepts of evaporation and the movement of water through the different states of the water...
University Corporation for Atmospheric Research
Ucar: Modeling Tree Transpiration
In this activity, learners will observe and measure the water given off through transpiration by a plant in a small terrarium.
Biology Pages
Kimball's Biology Pages: Transportation in Plants
A very good explanation of the processes of water transport in plants. Includes graphics that accompany this very detailed explanation.
TeachEngineering
Teach Engineering: Witnessing Evaporation
The engineers at Splash Engineering (the students) have been commissioned by Thirsty County to conduct a study of evaporation and transpiration in their region. During one week, students observe and measure (by weight) the ongoing...
Encyclopedia of Earth
Encyclopedia of Earth: Botany: Stomata
Article discussing the structure, function, and efficiency of stomata, the apertures on plants' leaves that regulate gas and water vapor exchange during photosynthesis. (Published: August 3, 2010)
BiologyWise
Biology Wise: Types of Photosynthesis
This resource describes three different types of photosynthesis that take place in plants and the plant characteristics and environmental conditions that determine which type takes place.
BiologyWise
Biology Wise: Stomata Function
Describes stomata and their functions in photosynthesis, transpiration, and regulation of water retention and loss by plants.
Science Bob Pflugfelder
Science Bob: Add Color to Flowers Using Science
Use this experiment to discover how to make colored flowers using common supplies with details on why it works.
TeachEngineering
Teach Engineering: Biodomes
Students explore the biosphere's environments and ecosystems, learning along the way about the plants, animals, resources and natural cycles of our planet. Over the course of lessons 2-6, students use their growing understanding of...