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Bio 212 exam #4 Questions with Correct Answers
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Bio 212 exam #4 Questions with Correct Answers
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Bio 212 exam #4 Questions with Correct AnswersThe single greatest reservoir for freshwater in the United States is Correct Answer-Groundwater
The most common of the elemental components listed in any living system is Correct Answer-Carbon
Which if the following statements about the nitrogen and phosphorus cycles is NOT true? Correct Answer-Decomposition of animal and plant
tissues releases usable phosphates and nitrogen containing compounds
Usable phosphate originally comes naturally from Correct Answer-
ROCKS
The largest source of iron enrichment in the ocean is Correct Answer-
Sahara desert sands
In terrestrial ecosystems, the vast majority of moisture in the air gets there from Correct Answer-TRANSPIRATION BY PLANTS
Why is the nitrogen cycle particularly complicated? Correct Answer-
because it involves multiple changes in chemical form.
When you eat a hamburger, you are the Correct Answer-SECONDARY CONSUMER The vast majority of water in California goes to support Correct Answer-
AGRICULTURE IRRIGATION
Certain bacteria are capable of transforming atmospheric nitrogen into a form other organisms can use through a process known as Correct Answer-NITROGEN FIXATION
The loss of _____ that occurs at each trophic level places a limit on how many top-level carnivores a community can support. Correct Answer-
ENERGY
_______ bacteria convert nitrate into atmospheric nitrogen. Correct Answer-DENTRIFYING
One of the greatest water problems we currently face is Correct Answer-
ALL ARE CORRECT
Nitrification is carried out by Correct Answer-LEGUMES
When the energy flow through an ecosystem is measured at each trophic
level, approximately
__________ of the available energy passes from one level to the next. Correct Answer-10%
The greatest addition of nitrogen-based pollution is occurring due to Correct Answer-APPLICATION OF SYNTHETIC FERTILIZERS Herbivores are at what trophic level within an ecosystem? Correct Answer-PRIMARY CONSUMER
The total amount of energy fixed by photosynthetic organisms minus the
energy used in their own metabolic activities is Correct Answer-NET PRIMARY PRODUCTION
Plants naturally obtain the carbon used in the manufacture of organic compounds from Correct Answer-CARBON DIOXIDE IN THE ATMOSPHERE
Algal production in the worlds ocean seems to be limited by the following nutrient Correct Answer-IRON
The trapping of heat in the Earth's atmosphere by certain gases is called the _________ effect. Correct Answer-Greenhouse
The term that refers to the terraforming of natural habitats with adequate
water resources into unnatural ones with massively depleted water resources is: Correct Answer-desertification
One of the greatest threats to maintaining biodiversity is Correct Answer-habitat loss
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