Questions #6-8 refer to the following food web: Source: Phytoplankton require sunlight and nutrients, such as nitrogen and phosphorous, to produce food via photosynthesis. If a nearby farm uses an abundance of fertilizers, excess nitrogen and phosphorous will flow into the Chesapeake Bay. Which of the following local populations will not experience an immediate increase in density after such an event? Benthic invertebrates Bivalves Small planktivorous fish Gulls Bivalves are filter feeders, meaning that they filter nutrients and food out of the water surrounding them. As pollutants enter the Chesapeake Bay, the bivalves take in these pollutants. Many bivalves are dangerous to eat from the Chesapeake Bay because they contain high levels of pollutants. Which of the animals below are not affected by the contaminated bivalves? Herbivorous ducks Osprey Sea ducks Bald eagle Biomagnification is the process by the level of contaminants increase as they move upwards in a food chain. If bivalves in the Chesapeake Bay become contaminated from run-off, which organism will experience the highest level of contamination? Bald eagle Tundra swan Bivalves Sea duck Pacific salmon are a type of salmon that are found in the Pacific Ocean. Although born in freshwater streams, these salmon spend the majority of their lives in saltwater. Depending on the species, Pacific salmon spend between one and eight years in the ocean before returning to freshwater to spawn. While in the ocean, they feed on a variety of organisms including kelp, copepods and crustaceans. Which of the following is a biotic factor affecting Pacific salmon? Water salinity Oxygen levels Copepod abundance Water temperature Questions #10-11 refer to the following information: The black rhinoceros is a mammal found in Africa. Weighing in at up to 1,350 kg, these rhinos can live roughly 35 years. Gestation in the black rhino lasts for 15-16 months, with calves staying under the mother’s parental care for up to four years.
Questions #6-8 refer to the following food web: Source: Phytoplankton require sunlight and nutrients, such as nitrogen and phosphorous, to produce food via photosynthesis. If a nearby farm uses an abundance of fertilizers, excess nitrogen and phosphorous will flow into the Chesapeake Bay. Which of the following local populations will not experience an immediate increase in density after such an event? Benthic invertebrates Bivalves Small planktivorous fish Gulls Bivalves are filter feeders, meaning that they filter nutrients and food out of the water surrounding them. As pollutants enter the Chesapeake Bay, the bivalves take in these pollutants. Many bivalves are dangerous to eat from the Chesapeake Bay because they contain high levels of pollutants. Which of the animals below are not affected by the contaminated bivalves? Herbivorous ducks Osprey Sea ducks Bald eagle Biomagnification is the process by the level of contaminants increase as they move upwards in a food chain. If bivalves in the Chesapeake Bay become contaminated from run-off, which organism will experience the highest level of contamination? Bald eagle Tundra swan Bivalves Sea duck Pacific salmon are a type of salmon that are found in the Pacific Ocean. Although born in freshwater streams, these salmon spend the majority of their lives in saltwater. Depending on the species, Pacific salmon spend between one and eight years in the ocean before returning to freshwater to spawn. While in the ocean, they feed on a variety of organisms including kelp, copepods and crustaceans. Which of the following is a biotic factor affecting Pacific salmon? Water salinity Oxygen levels Copepod abundance Water temperature Questions #10-11 refer to the following information: The black rhinoceros is a mammal found in Africa. Weighing in at up to 1,350 kg, these rhinos can live roughly 35 years. Gestation in the black rhino lasts for 15-16 months, with calves staying under the mother’s parental care for up to four years.
ecology-multiple-choice-review-2014-04-14.docx