APES MCQ Unit 8

An ecologist examining several different ponds discovers that in one pond all the frogs are female. Which of the following most likely led to the all-female population of frogs? A) An endocrine disruptor B) A carcinogen C) Nitrogen fertilizers D) Heavy metals

A) An endocrine disruptor

Eutrophication results in the death of trout and other fish as a result of A) Toxic PH levels In the water B) Asphyxiation from lack of oxygen C) toxic levels of mercury in the water D) Toxic concentrations of salt in the water E) A lack of sufficient minerals in the water

B) Asphyxiation from lack of oxygen

If wastewater treatment plan effluent that contains nitrates and phosphates is allowed to flow into a body of water, which of the following may result? A) Chlorination B) Decomposition C) Eutrophication D) Oxygenation

C) Eutrophication

In which of the following ecosystems do tree roots serve as important naves for biodiversity? A) sat marsnes B) Coral reefs C) Mangrove forests D) Estuaries E) Freshwater wetlands

C) Mangrove forests

Pollutants from agriculture, storm runoff, lawn fertilizers, and sewer overflows are A)Point source B)Open source C) Nonpoint source D)Always absorbed by wetlands

C) Nonpoint source

11. Which category of ecosystem services best details the awarding of a grant to research the breeding patterns of a snail population alone the headwaters of the Brazos River which results in a literary publication in an invertebrate scientific journal? A) Provisioning B) Regulating C) supporting D) Cultural

D) Cultural

Which of the following is decreased by the breakdown of organic waste? A) Acidity B) Turbidity C)Hardness D) Dissolved oxygen E) Salinity

D) Dissolved oxygen

Which of the following examples includes both a point and a nonpoint source of pollution? A) factory smokestack and a sewage overflow B) Runoff from city streets and pesticides from agricultural fields C) Waste from animal feedlots and sediment from construction sites D) Fertilizer from suburban lawns and wastewater from a water treatment plane

D) Fertilizer from suburban lawns and wastewater from a water treatment plane

Many synthetic chemicals, such as PCBs, act as estrogen mimics. In an ecosystem, these persistent chemicals would have the greatest effect on which of the following? A) Decomposers B) Primary producers C) Parasites D) Secondary consumers E) Autotrophs

D) Secondary consumers

Which of the following is NOT an ecosystem services of wetlands? A) Acting as carbon sinks B) Providing recreation areas C) Serving as nurseries for fish D) Recharging groundwater E) All or the above are ecosystem services

E) All or the above are ecosystem services

Defining characteristics of a wetland involve which of the following? I Hydrology II Soil type III Species composition A) I only B) Il only C) I and Il only D) Il and Ill only E) I, Il, and Ill

E) I, Il, and Ill

An ecologist examining several different ponds discovers that in one pond all the frogs are female. Which of the following most likely led to the all- female population of frogs? A) An endocrine disruptor B) A carcinogen C) Nitrogen fertilizers D) Heavy metals

A) An endocrine disruptor

Most streams follow a branching drainage pattern, which is known as A) Dendritic drainage B)Fractional drainage C)Composite drainage D)Radial drainage

A) Dendritic drainage

Persistent organic pollutants (POPs) are dangerous because they A)Remain in the environment, bio-accumulate in organisms, and bio-magnify throughout the food chain B) Are considered carcinogens C )Are corrosive and toxIc D) Persist in the environment and contribute to an increase in greenhouse gases

A)Remain in the environment, bio-accumulate in organisms, and bio-magnify throughout the food chain

Which of the following best describes the action of an endocrine disruptor? A) An endocrine disruptor attacks hormones that invade a body system and cause disease. B) An endocrine disruptor blocks the receptor protein binding site of a hormone so that the cell cannot receive a signal. C) An endocrine disruptor acts as an organic catalyst, produced by living things to regulate the rate of chemical reactions. D) An endocrine disruptor helps to transport substances, such as pesticides, in an organism following exposure.

B) An endocrine disruptor blocks the receptor protein binding site of a hormone so that the cell cannot receive a signal.

In a river ecosystem, dissolved oxygen concentrations drop quickly downstream from a point source inputs of organic matter into the river. This effect is due to A) Increasing populations of mayfly and stonefly larva B) Increasing bacterial activity as organic matter decays C) Decreasing bacterial activity as turbidity increases D) Decreasing water temperature as surface evaporation increase

B) Increasing bacterial activity as organic matter decays

The dangers of disposing of toxic chemicals underground came to public attention in which of the following locations? A) Chernobyl, Ukraine B) Love Canal, New York C) Minamata, Japan D) Three Mile Island, Pennsylvania

B) Love Canal, New York

Which of the following practices would best help to protect against inland and coastal flooding in urban areas? A) Regulating the use of pesticides and fertilizers in agriculture B) Preserving wetland and coastal mangrove habitats C) Increasing the capacity of the sewer lines so they can handle a larger volume of water D) Straightening stream channels to Increase stream flow

B) Preserving wetland and coastal mangrove habitats

Lakes that are characterized by high water clarity and low concentration of dissolved nutrients are classified as A) Climax B) Eutrophic C) Oligotrophic D) Stratified

C) Oligotrophic

Which of the following best describes a way that persistent organic pollutants (POPs) cause harm to the environment? A) Persistent organic compounds release carbon dioxide and methane into the atmosphere when buried for disposal B)Persistent organic compounds release radioactivity during decay C) Persistent organic compounds are soluble in fat, so they accumulate in an organisms' fatty tissues D) Persistent organic compounds have magnetic signatures that confuse birds during migration

C) Persistent organic compounds are soluble in fat, so they accumulate in an organisms' fatty tissues

Which of the following will result in accelerated eutrophication when introduced into streams lakes, and bays? A) Bacteria and viruses B) Pesticides C) Phosphates D) Acid wastes and salts

C) Phosphates

Which of the following best describes a supporting ecological service provided by wetlands? A) Wetlands serve as a source of aesthetic inspiration for art and literature B) Wetlands provide opportunities for ecotourism, which provides revenue to the local economy C) Wetlands serve as a major reservoir for nitrogen in the nitrogen cycle D) Wetlands provide a habit for a wide variety of organisms

D) Wetlands provide a habit for a wide variety of organisms