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What an organism does in its environment
Niche
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specific place in environment where an organism is found
Habitat
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The more complex the habitat, the more ______ there will be
microhabitats
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group of the same species that occupies a specific area
population
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a population of different species that occupy one habitat at the same time
community
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relatively stable systems that result from the interaction of biological communities and the physical environment
ecosystem
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What is homeostasis?
internal balance relative to external change
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When environmental factors are within optimal range what two results are at its best?
survival and reproduction
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What provides energy to all forms of life directly or indirectly. How?
Sunlight through photosynthesis
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ectotherm
organisms that body temperature depends on the surrounding temperature.
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endotherms
organisms that body temperature depends on its metabolic heat production.
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animals that tolerate to wide variation in salt concentrations in which they live.
Euryhaline
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Stenohaline
animals that have a limited tolerance to variations in salt concentrations in which they live.
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Isosmotic
having body fluids with same osmotic pressure as the medium in which the animal lives.
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Having body fluids that are more concentrated than the surrounding medium.
hyperosmotic
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Hyposmotic
Having body fluids that are less concentrated than the surrounding medium.
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Osmoconformer
organisms whose body fluids conforms with that of the surrounding medium
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organisms who regulate or maintain its osmotic concentration in spite of external concentration changes
Osmoregulator
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What are autotrophs?
organisms that produce their own food; primary producers
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Heterotrophs are?
organisms that rely on other orgniams for food; consumers
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Herbivores
eat grass, primary consumers
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carnivores
- feed on herbivores (secondary consumers)
- feed on other consumers (tertiary consumer)
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Omnivores
feed on both producers and other consumers
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detritivores
Feed on poop and dead remains
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Decomposers
break down the tissues of dead organisms
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The average amount of energy that is transferred to the trophic levels is ____?
10%
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Difference between K and r select.
Development/death rate/adult size/reproductive tempo
- K:
- slow, low, generally large, few/year
- r:
- rapid, high, generally large, many/year
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What are the 3 symbiosis types and explain:
Parasitism: host has negative benefit; symbiont has positive benefit
Commensalism: host has no effect and symbiont has positive
Mutualism: both host and symbiont benefit
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Pelagic Division -
The division of the marine environment composed of the ocean's water.
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Benthic Division -
The division of the ocean environment composed of the ocean bottom.
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