Homeostasis Quiz 1 Review 2

Which statement accurately describes the trophic level of primary consumers?

• They occupy Trophic Level 1.

• They occupy Trophic Level 2.

• They occupy Trophic Level 3.

• They are at the top of the energy pyramid.

If producers in an ecosystem contain 50,000 kilocalories of energy, how much energy would be available to secondary consumers, following the 10% rule?

• 500 kilocalories

• 5,000 kilocalories

• 50,000 kilocalories

• 500,000 kilocalories

In a food web where birds eat grasshoppers and a certain type of plant, if the bird population decreases, what is a likely immediate effect on the grasshopper and plant populations?

• Grasshopper population decreases, plant population increases.

• Grasshopper population increases, plant population decreases.

• Both grasshopper and plant populations decrease.

• Both grasshopper and plant populations increase.

What is the primary role of decomposers like bacteria and fungi in an ecosystem?

• To produce their own food using sunlight.

• To consume living organisms for energy.

• To break down dead organic matter and return nutrients to the ecosystem.

• To compete with apex predators for food sources.

In a parasitic relationship, how do the two organisms involved interact?

• Both organisms benefit.

• One organism benefits, and the other is harmed.

• One organism benefits, and the other is neither helped nor harmed.

• Both organisms are harmed.

What type of symbiotic relationship is characterized by both organisms benefiting from the interaction?

• Parasitism

• Commensalism

• Mutualism

• Competition

What process converts atmospheric nitrogen gas into ammonia and ammonium, making it usable by organisms?

• Nitrification

• Ammonification

• Denitrification

• Nitrogen Fixation

Which biological process uses carbon dioxide from the atmosphere as an input to produce glucose?

• Cellular Respiration

• Photosynthesis

• Decomposition

• Combustion

What is the primary cause of coral bleaching?

• Ocean acidification

• Expulsion of symbiotic algae due to high temperatures

• Overfishing of coral reefs

• Destruction of coral habitats by human activity

Which of the following human activities is known to negatively affect biodiversity?

• Reforestation efforts

• Species conservation programs

• Introduction of invasive species

• Exploring sustainable practices