GEOG 203 Lecture Notes - Lecture 5: Greenhouse Effect, Primary Production, Detritivore
Document Summary
Consider two food chains of unequal length, both start with plants containing equal amounts of the pesticide ddt. In the cells of the plant, actually, in organelles inside the cell, these organelles are. The chloroplasts contain molecules of chlorophyll, which is the pigment that absorbs light energy at a certain wavelength. Photosynthesis is the process, powered by sunlight, by which co2 is untied with. Carbon dioxide enters the plant through stomata" is the pore in the surface of the leaf. It can open and close, thanks to guard cells, when open, co2 enters the leaf: the chemical process occurs in the cloroplasts. This process relies on water present but also leaf moisture to allow the process to occur within the plant, and this is why in arid regions moisture is lost through stomata. As plants are living they are also respiring- they are consuming energy to maintain their cells and perform metabolic functions: respiration is essentially the reverse of photosynthesis.
