Describes symbiosis and its significance in the day-to-day lives of plants and animals. Gives specific examples of mutualism, commensalism, and parasitism in the relationships among fungus and plant roots, animals and bacteria, birds and animals, fish, and predator and prey. (MDH)

Describes the effects of thigmomorphogenesis, the mechanical stimulation of plants, and how to engage biology students in a study of this unusual plant response. Focuses on an exploration of the effect of wind on a particular plant variety. (DDR)

Discusses practical work which can be completed in a few hours that enables students to explore the genetics of the dandelion plant, which reproduces asexually. Dandelions, measuring instruments, and student imagination are needed for this activity. (DDR)

Details the teaching of an undergraduate plant-cell biology class in the manner proposed by Jean Baptiste Carnoy when he established the first institute of cellular biology. Integrates mathematics, astronomy, physics, chemistry, anatomy, physiology, and ecology. Contains 226 references. (DDR)

Suggests activities for studying the variety of life forms found and the interaction of living things during a class trip to the beach. (WRM)

Presents three activities using pearl onion bulbs to illustrate plant growth and plant propagation under various conditions. (WRM)

Details laboratory procedures that enable students to understand the concept of how differences in water potential drive the movement of water within a plant in response to transpiration. Students compare transpiration rates for upper and lower surfaces of leaves. (DDR)

Describes a project in which teachers concentrate on providing hands-on learning and work with students to build a nature center. Students participate in the planning, implementation, and evaluation phases of the project. (DDR)

Describes historical accounts dating back to as early as 604-562 BC of the various uses of hydroponics. Throughout the article, diagrams and simple instructions are provided to aid in classroom use of hydroponics. (ZWH)

Describes an experiment designed to teach students to accurately identify and measure changes in plant morphology and chemical composition due to environmental stresses. Contains 31 references. (DDR)

Presents photosynthesis as a dynamic demonstration requiring student participation. Depicts photosynthesis as sequential and is scripted in two acts. (DDR)

Describes a laboratory activity investigating important concepts in microbiology and ecology in which students design and carry out their own experiments and learn about microorganisms. Points out that all microorganisms are not dangerous and studies the relationship between Methylobacterium and plants. (YDS)

Advocates including plants at several trophic levels when studying food chains. Presents background information on parasitic plants, myco-heterophytes (saprophytes), and carnivorous plants. Contains 20 references. (WRM)

Introduces an elective science course on one of the silent invaders across the nation--noxious weeds. Targets public education as the main goal of the project. (YDS)

In this study the photoinhibition of photosystems (PS) I and II caused by exposure to high intensity light in oat ("Avena sativa," var Prevision) is measured by the emission of chlorophyll fluorescence in intact leaves adapted to darkness. The maximal quantum yield of PS II was lower in plants grown under high light intensity than in plants grown…