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28 Cards in this Set
- Front
- Back
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Science |
Study of world around us |
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Biology |
Study of life |
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Methods of Study |
Narrow window a biologist concentrates eg. ecology, genetics |
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Areas of study |
Studying of different forms of life eg. Zoology, botany |
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2 important skills |
Making observations and inferences |
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Homeostasis |
Maintaining constant internal environment eg. Regulating body temperature |
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Unity and diversity |
Similarities and differences in a group of organisms |
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Ecology |
The study of living things in their environment |
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Relationship of structure to function |
How an organisms structure is related to its function |
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Ecosystem |
All biotic and abiotic factors in an area (temperature and moisture determine this) |
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Biosphere |
All area where life is found on earth (lithosphere, hydrosphere, geosphere, atmosphere) |
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Population |
Total number of specific species in an area (eat, reproduce, take up space, interact) |
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Density |
Density = Population size/Area |
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Density dependent factors |
Limiting factors dependant on pop. size (predator-prey, competition, parasites) |
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Density independant factors |
Nothing to do with pop. size (natural disasters) |
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Exponential growth |
If an organisms population has unlimited resources it will grow at an exponential rate (growth curve chart) but this never happens since factors stop it |
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Succession |
The change in an ecosystem overtime |
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MnmN |
M= # captured first time n=# captured 2nd time m=# of marked recaptured N= Population calculation N=Mn/m |
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Errors |
Birth/death, immigration/emigration, marking method |
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Constants |
Capture time, method, area, conditions |
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Symbiotic relationships |
Mutualism, parasitism, commensalism |
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Niche |
A populations role in an ecosystem - includes all abiotic and biotic factors that effect an organism - the niches of diff pop. can overlap |
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Community |
Different species interacting in a common location |
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Size calculations |
Grid plotting- plants Mark/recapture - animals |
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Habitat vs Range |
Habitat = environment Range = where on map organism was found |
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Intraspecific |
Competition between the same species - food space and mates |
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Interspecific |
Competition between different species where there is overlap -food, space, water/ light for plants |
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Metabolism |
Total sum of all chemical reactions in the body, plants photosynthesizes animals consume nutrients and using energy to maintain bodily functions |
