BI 101 Food webs and Ecosystems Linn Benton Community

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Levels of study in Ecology,Population,Biosphere What is an ecosystem. The Laws of Thermodynamics,A set of universal laws governing all energy. changes in the universe,The First Law of Thermodynamics. Total amount of energy in the universe,remains constant. Energy cannot be created nor destroyed,However it can change forms.
During each conversion some energy is lost,into the environment as heat energy. The Second Law of Thermodynamics,Disorder in closed systems is continuously. increasing Copyright The McGraw Hill Companies Inc Permission required for reproduction or display. Disorder happens spontaneously,Entropy is a,measure of. the disorder,of a system,Simply put the,Second Law. entropy increases Organization requires energy,both Keith Eng 2008.
Figure 5 3 Entropy in action 5,Overview of photosynthesis. Copyright The McGraw Hill Companies Inc Permission required for reproduction or display. Cross section of leaf,Mesophyll Stoma,Bundle Nucleus. Chloroplasts,Mesophyll cell,Inner membrane,Outer membrane. Chloroplast,Right Roger Brooks Beateworks Corbis RF 6. Plant Anatomy Vegetative Organs,Leaves Stem,Photosynthesis Support.
Gas exchange Transport,Light absorption Storage,Storage Form Function. Absorption,leaf blade Leaf Vein,one vascular,bundle cuticle. leaf vein Upper,Water dissolved Mesophyll,mineral ions from. roots and stems,move into leaf Lower,vein blue arrow Epidermis. cuticle coated cell,of lower epidermis,Photosynthetic.
products pink one stoma opening,arrow enter across epidermia. vein will be Carbon dioxide,transported Oxygen and. water vapor in outside air,throughout enters leaf at. plant body diffuse out,of leaf at stomata,stomata Fig 29 14 p 501. Making Energy Photosynthesis,Chloroplasts contain the pigment chlorophyll.
Chlorophyll a b,Photosynthesis The Components,What are the inputs. What are the outputs,Photosynthesis The Components. 6CO2 6H2O Light energy C6H12O6 6O2,What are the inputs. carbon dioxide,What are the outputs,Light is a wave of energy colors are. different wavelengths,Photosynthesis Input Light,The color you see.
Energy wavelength,Photosynthesis Light Absorption,Plants are green because. Reflect green light,Absorb red blue,and purple light. Photosynthesis Light Absorption,Plant pigments absorb light. Absorb red blue,and purple light Reflect green light. Autumnal Changes in Leaf Color,Chloroplasts of mature leaves contain several.
groups of pigments,Chlorophylls Green,Carotenoids Yellows. In fall chlorophylls,break down first and,other colors are. Discussion Question,What would happen if a leaf lacked. carotenoids,a The leaf would absorb all energy levels. b The leaf would turn yellow orange during,c The leaf would not absorb Carbon dioxide.
d Photosynthesis would not be as efficient,e The leaf would require oxygen. Photosynthesis The Components,6CO2 6H2O Light energy C6H12O6 6O2. What are the inputs,carbon dioxide,What are the outputs. Guard Cells,Vascular plants have stomata,Discussion Question. What would happen to the rate of,photosynthesis if the light levels remained.
the same and the carbon dioxide levels were,a Rate of photosynthesis would increase. b Rate of photosynthesis would decrease,c Rate of photosynthesis would remain the. d There is no relationship among the two,Plants and Respiration. Photosynthesis,6 CO2 6 H2O Light Energy C6H12O6 6 O2. Respiration,C6H12O6 6 O2 6 CO2 6 H2O Energy,Primary producers the autotrophs.
Auto self trophy nourishment,Organisms take nourishment directly from the. environment,Phytoplankton ocean,Terrestrial plants. http www njscuba n,http www 100m,et biology eco water. ag com know002,Consumers heterotrophs,Hetero other trophy nourishment. Detrital food web,Discussion Question, Which trophic level is incorrectly matched with its.
a Primary producer autotrophic organisms,b Primary consumer consumes producers. c Secondary consumer consumes primary,d Primary producer consumes plants. e All of the above are correctly matched,Copyright TheTertiary consumer. McGraw Hill Companies Inc Permission required for reproduction or display. Trophic levels within level 4,an ecosystem,Secondary consumer. Detrivores also known Trophic,as scavengers are level 3.
special consumers that,eat dead organisms Primary consumer. Decomposers are level 2,organism that break,down organic Producer. substances making them Trophic,available to other,bacteria and fungi are the. principal decomposers in Decomposers,land ecosystems 29. Discussion Question The world is green,Three hundred trout are needed to support one.
man for a year The trout in turn must,consume 90 000 frogs that must consume 27. million grasshoppers that live off of 1 000 tons,G Tyler Miller Jr American Chemist 1971. Q Why do we observe less predator biomass,and more prey and plant biomass. BI 101 Food webs and Ecosystems Learning objectives Name the inputs and outputs of photosynthesis and how this relates to respiration Understand the importance of light wavelengths in photosynthesis Describe the flow of energy through the ecosystem and understand how this affects the biomass of tropic levels Understand the cycling of nutrients such as carbon and water

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