BIOL 206 Lecture Notes - Lecture 10: Cellular Respiration, Soil Structure, Commensalism
Document Summary
Plant nutrients: there is a zone of tolerance for oxygen. Ex: anaerobes cannot handle oxygen: every organism needs to acquire energy and convert it to atp, water, nutrients (macronutrients), a carbon source, minerals are not organic molecules, cyanobacteria- prokaryotic. Water provides great solution containing all the minerals in the solvent needed for life, and where they occupy in water have access to light they are photosynthetic: bryophytes- mosses. Non-vascular, seedless, motile sperm, lives in wet places. Ex: rocks: gymnosperms- naked seeds conifers, cedar trees, pine trees, fur tress. Has vascular tissues can distribute water thought plant body. Huge root system, can exploit resources in the soil: describe some of the nutritional links between plants and microbes. Microbes are bacteria in the soil that could be symbionts, commensal, parasites, etc. Also roundworms, insects etc: consider a corn plant at two different developmental stages as seen in this figure. Seed and grown stalk with leaves, roots etc.
