BIS 2B Lecture Notes - Lecture 4: Stoma, Mycorrhiza, Photorespiration

• School: UC-Davis
• Department: Biological Sciences
• Course: BIS 2B
• Professor: Laci Gerhart-Barley

Document Summary

Bis 2b 10/3/18: what is functional diversity, ho(cid:449) orga(cid:374)is(cid:373)s (cid:448)ary i(cid:374) their adaptatio(cid:374)s for , acquiring nutrients, dealing with stressful environmental conditions, defending against predators and pathogens. Life history traits (reproduction, development, etc: example: sweating cools the body, elephants lose heat through ears, dogs use evaporate cooling off their tongue. C3 photosynthesis: most common pathway, all mesophyll cells take up co2 and build sugar. Only photosynthesis in the day: two problems: Losing water through leaves: photorespiration: the molecules that pick up co2 in order to make sugar, also picks up o2 and makes something else, first step builds 3 c molecule. Plants and mycorrhizae: mycorr = fungus, wrap around cells or inside root cells, plant roots now has access to everywhere the fungal is underground without growing roots to access, significantly increase plants resources, fungus gets sugar. More energy efficient rlly hard to digest plants. You can eat a bunch of things and not have to worry about finding food.