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Ecology Test #1
Test questions and terminology
| Question | Answer |
|---|---|
| A good example of an ecological study at the ecosystem level is: | Studying nutrient cycling in a lake |
| The global distribution of terrestrial biomes is primarily determined by: | Temperature and Precipitation |
| The advantage of Countercurrent circulation in the gills of fish is that: | it allows the blood to pick up greater than 50% of the oxygen in water since the water and blood are flowing in opposite directions |
| This statement is true about a plant's need to obtain CO2 to perform photosynthesis: | Aquatic plants in stagnant water may have a problem obtaining CO2 despite the large concentration of bicarbonate (HCO3-)ion in water |
| These statements are correct comparisons/contrasts about temperate grasslands and tropical savanna: | -The dominant vegetation in both are fire-adapted -TG have generally cooler temperatures than TS -Both can support large herbivores |
| An organism may be specially adapted for obtaining and/or retaining water by: | -Increasing the concentration of amino acids and carbohydrates in its roots -Retaining a by-product of respiration -Producing dry feces |
| In the Northern hemisphere, slopes with a southerly aspect tend to be: | Warm and Dry |
| Plants faced with a scarcity of soil nutrients typically respond by: | Increasing root growth and decreasing shoot growth |
| This statement is a correct comparison/contrast about temperate deciduous forests and tropical rainforests: | Both biomes are heavily impacted by human disturbance |
| The soil texture with approximately equal proportions of sand, silt and clay | Loam |
| The part of the electromagnetic spectrum composed of wavelengths in the range of approximately 400-700nm | PAR (visible light) |
| A group of interbreeding organisms of the same kind (all individuals of a species in a given area) | Population |
| Kingdom of organisms which includes the protozoans and most algae | Protoctista/ Protista |
| The scientific study of how organisms interact with each other and with their physical environment | Ecology |
| Referring to materials transported into a system; term often used to describe streams and rivers where externally derived organic matter forms the base of the food chain | Allochthonous |
| The world's major community or ecosystem types | Biomes |
| A characterization of the structure of soil vertically through its various horizons, or layers (term refers to all the layers of a soil) | Soil Profile |
| The major habitat zone of a lake, pond, or ocean which extends from the shore out to the farthest point at which rooted plants are found | Littoral Zone |
| The decrease in temperature with increasing elevation caused by the expansion of air in the lower atmospheric pressure | Adiabatic Cooling |
| 6 O2 + C6H12O6 -> 6 CO2 + 6 H2O | Cell Respiration |
| Habitat zone found on the bottom of lakes, rivers, and oceans | Benthic Zone |
| Light level at which a plant is able to accomplish just enough photosynthesis to balance its respiration costs | Compensation Point |
| The zone of water depth in lentic ecosystems within which temperature changes most rapidly | Thermocline |
| The energy expenditure of an organism at rest; the minimal energy requirements of an organism | BMR (basal metabolic rate) |
Created by:
rstacey1
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