BIOLOGY 2F03 Lecture Notes - Water Potential, Pith, Beltian Body
Document Summary
Mutualism interactions between individuals of different species that benefit both partners. Many browsers are ruminant : symbiotic organisms help process cellulose into a form that"s digestible for animals. Hummingbirds go into deep hibernation fungus root symbiotic relationships: many of the larger plants grow roots into the soil, fungi become intermediate between soil properties and roots. Are these species that do not engage in mutualism or, how common mutualism is: humans are headed in that direction. Fossil records: mycorrhizae arose early in the evolution of land plants, perhaps as long as 400 million years ago. Mutualism between plant and fungi had plenty of time to get refined. Water concentration in the leaves versus the water concentration in the air. Agropyron with mycorrhizae maintained higher leaf water potential lower potential means that the leaf is getting drier throughout a hot summer day. More than twice as much water potential with mycorrhizae.
