Ecology Unit Review (Questions From The 2005 Md Hsa)
This test consists of 2005 HSA questions related to the ecology unit of the MCPS biology curriculum.
- 1.
What is the relationship between the sea otter and the seat urchin?- A.
Competition
- B.
Predation
- C.
Mutualism
- D.
Parasitism
- 2.
What is the relationship between the sea urchin and the kelp crab?
- A.
Competition
- B.
Predation
- C.
Mutualism
- D.
Parasitism
- 3.Cholera bacteria live inside copepods, tiny marine organisms. This type of microscopic bacteria harms the copepods by feeding off their internal tissues.Which of these describes the relationship between cholera bacteria and copepods?
- A.
Mutualism
- B.
Parasite–host
- C.
Commensalism
- D.
Producer–consumer
- 4.A team of marine scientists is studying biotic and abiotic factors that affect the stability of a deep-sea ecosystem.The scientists discovered a species of fish that eats other fish and decaying matter. Which of these does not describe the newly discovered fish?
- A.
Consumer
- B.
Predator
- C.
Scavenger
- D.
Producer
- 5.A team of marine scientists is studying biotic and abiotic factors that affect the stability of a deep-sea ecosystem.The deep-sea ecosystem is a stable ecosystem. Which of these is a characteristic of most stable ecosystems?
- A.
They contain a wide variety of organisms.
- B.
They contain very few organisms.
- C.
Organic nutrients are in short supply.
- D.
Sunlight is not used to make food.
- 6.Hydrothermal vent communities are often destroyed by lava erupting from the ocean floor. After the lava has cooled, different organisms begin to inhabit the area. Over a period of a few years, organisms inhabit the area in the following order:sulfur bacteria -> crabs -> giant tubeworms -> clams and musselsWhich of these best identifies this sequence of events?
- A.
Evolution
- B.
Mutation
- C.
Succession
- D.
Translation
- 7.The organisms in this community live near heated vents. Inorganic compounds such as sulfides mix with extremely hot water when they are released from the vents. Bacteria use the sulfides to make food for themselves and other animals. Many of these bacteria live in the bodies of the giant tubeworms and the giant white clams that live in this community.Which of these is an abiotic factor that influences this ecosystem?
- A.
Food
- B.
Bacteria
- C.
Water temperature
- D.
Giant tubeworms
- 8.
Which of these describes the role of the vole in the Yellowstone ecosystem?
- A.
Decomposer
- B.
Producer
- C.
Herbivore
- D.
Carnivore
- 9.Scientists estimate that 200 non-native organisms have been introduced into Chesapeake Bay. Which of these statements is not true about non-native organisms?
- A.
They often form mutualistic relationships with native organisms.
- B.
They can deplete the food sources of native organisms.
- C.
They are often aggressive at acquiring and maintaining territory.
- D.
They can prey on native organisms causing them to go extinct.
- 10.Reef-building coral are marine animals with single-celled algae living in their tissues. The coral provide protection for the algae and the algae provides food for the coral. Which of these statements best explains what would happen to the coral if the algae die?
- A.
The coral would grow well because it does not have a competitor.
- B.
The coral would die because it needs the food produced by the algae.
- C.
The coral would grow well because it does not have a parasite.
- D.
The coral would die because it cannot produce food for the algae.
- 11.Striped fish are affected by biotic and abiotic factors in their environment. Which of these factors is biotic?
- A.
Water temperatuure
- B.
Mineral nutrients
- C.
Freshwater algae
- D.
Inorganic sediments
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