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13 Cards in this Set
- Front
- Back
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5 Main points of natural selection? |
1. More offspring produced than can survive 2. Random variations in all organisms 3. Some inheritable traits make organisms better suited for environment 4. Favorable traits accumulate in population 5. Environment itself does the physical and biological selection |
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Convergent Evolution |
Organisms that aren't closely related evolve with the same traits due to sharing the same environmental conditions |
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Difference between artificial and natural system of classification? |
Artificial is classifying organisms based on abilities (planes, flying squirrels, birds) Natural is classifying them based on evolutionary history and developmental characteristics |
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Who developed the idea of animal kingdoms? How were they classified? |
Linnaeus 3 Kingdoms: animal, vegetable, mineral Grouped organisms by external similarities and likeness of developmental details... based on hierarchy Kingdom, phylum, class, order, family, genus, species |
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What are the 3 domains and their characteristics? |
Bacteria: lack distinct compartments (including nucleus), single-celled organisms diverse metabolic abilities Archaea: " ", " ", can withstand corrosive/hot environments Eukarya: cells have nucleus, multicellular |
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Chemosynthesis: |
Conversion of carbon molecules to carbohydrates |
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In what ways does Carbon enter the atmosphere? |
Respiration of living organisms, volcanic eruptions, burning fossil fuels |
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Limiting factors: |
Physical/biological necessity whose presence in inappropriate amounts limits the normal action of the organism Ex: Area when warmth, nutrients, CO2 levels make it adequate for photosynthesis, but if there's no light (limiting factor), it doesn't occur |
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What is a more accurate term for the feeding relationship of organisms involving multiple organisms at each trophic level for a higher level organism to eat? |
Food web |
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A salmon migrates from the ocean to freshwater rivers to spawn. Which of the following best describes what type of environment the salmon moves from and into? |
Hypertonic to hypotonic |
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Chemosynthesis is the main method of binding energy into carbohydrates on the planet. (T/F) |
False |
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When accounting for the entire surface area of the ocean and land, the ocean has a higher primary productivity at 150 gC/m2/year than land at 120gC/m2/yr. (T/F) |
False |
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Which of the four factors that influence primary production are limiting in the oceanic environment? (water, inorganic nutrients, sunlight) |
B and C |
