Unit Eight: Ecology- essential knowledge

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How do organism responed to environmental changes

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1

How do organism responed to environmental changes

behavioral and physiological mechansims

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2

When do organisms exchange information with one another

response to internal changes and external cues

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3

What are communication mechanisms

signaling behaviors, visual, audible, tactile, electrical, and chemical signs

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4

What communication does natural selection use

innate and learned behaviors through cooperative behavior

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5

What are the strategies for regulating body temperature and metabolism

endotherms— thermal energy from metabolism

ectotherms- move into sun/shade

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6

What is the relationship between size and metabolic rate

smaller the organism higher the metabolic rate

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7

What is net gain of energy results

energy storage or growth

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8

What is net loss of energy results

loss of mass or death

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9

Where do photosynthetic organisms get energy

sunlight

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10

Where do chemosynthetic organisms get energy

small inorganic molecules

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11

Where do heterotrophic organisms get energy

metabolized charbohydrates, lipids, and proteins via hydrolyisis

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12

What is the population growth equation

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13

What is the exponential growth equation

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14

When is a logistic growth model use

with limits to growth from density-dependent and density-independent factors are imposed

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15

What is the logistic growth model equation

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16

What is the Simpson’s Diversity Index

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17

How can communites change

depending on interactions between populations

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18

What does interactions among populations determine

access of energy and matter with a community

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19

What interactions can drive population dynamics

competition, predation, symbioses (i.e parasitissm, mutualism, commensalism

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20

What can result from cooperation or coordination etween organisms

increased movement of energy and matter

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21

What ecosystems are least resilient to changes in environment

natural/artificial with fewer component parts, less diversity

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22

What are keystone species

essential abiotic and biotic factors contribute to maintaining the diversity and function

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23

What is an adaptation

genetic variation that is favored by selection

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24

How do invasive species damge ecosystemes

disrupt energy balenance, overturn the ecosysteme

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25

How does human impact facilitate environemntl

introduction of new diseeases

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