11:067:330- Midterm Exam Guide - Comprehensive Notes for the exam ( 130 pages long!)
12 Oct 2017
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Most animals consume plants for some nutrients. Plants convert nitrates in soil into aas to make plant proteins. Hen an animal eats a plant they eat glucose and aas: good because they don"t make these nutrients themselves. Denitrifying bacteria convert some soil nh3 into atmospheric n2. Other soil bacteria can fix atmospheric n2 into aas. These bacteria exist on the roots of some plants: these plants tend to have a higher protein content. Legumes (cid:314) plants with mutualistic relationship with bacteria of genus rhizobium; most important plants in feeds. High in protein: ex. (cid:314) beans, peanuts, soybeans, and (most important) alfalfa. Grazing animal (cid:314) eats the part of plants above the ground. Browsing animal (cid:314) eats just leaves of a tree or bush, not stems. Plants are processed into their components and only the parts needed for the certain feed are used. Stems (cid:314) for structure and stability; contain vascular tissues for water, nitrogen, and sugar transport.
