LWE- Energy Flow in Ecosystems

Which process is responsible for recycling nutrients like carbon, nitrogen, and phosphorus through the environment?

A. Cellular respiration

B. Ingestion

C. Photosynthesis

D. Decomposition

D. Decomposition

How do decomposers contribute to the energy flow in terrestrial and near-surface marine communities?

A. They absorb energy from the sun

B. They break down organic matter, returning nutrients and energy to the soil and lowe trophic levels

C. They release energy during respiration

D. They generate energy through chemosynthesis

B. They break down organic matter, returning nutrients and energy to the soil and lowe trophic levels

What distinguishes the Epipelagic zone from other oceanic zones?

A. It experiences the highest water temperatures

B. It is characterized by complete darkness

C. It is the uppermost layer with sufficent light for photosynthesis

D. It has the lowest salinity levels

C. It is the uppermost layer with sufficent light for photosynthesis

How are energy and nutrients primarily transferred in a food web?

A. From predators to prey species

B. From secondary consumers to primary producers

C. From one trophic level to another through organisms’ feeding relationships

D. From decomposers to primary producers

C. From one trophic level to another through organisms’ feeding relationships

What term is used to describe organisms that obtain energy directly from sunlight in a food web?

A. Carnivores

B. Producers

C. Omnivores

D. Herbivores

B. Producers

A savanna ecosystem has a GPP of 18,000 kcal/m²/year, and R is 7,500 kcal/m²/year. Calculate the NPP.

A. 11,500 kcal/m²/year

B. 3,000 kcal/m²/year

C. 25,000 kcal/m²/year

D. 10,500 kcal/m²/year

D. 10,500 kcal/m²/year

If the primary producer level captures 8000 J of solar energy, how much energy would be available to the tertiary consumer level?

A. 800 J

B. 8 J

C. 8000 J

D. 80 J

B. 8 J

What role do producers play in the energy flow of terrestrial and near-surface marine communities?

A. They convert solar energy into chemical energy through photosynthesis

B. They absorb energy from the soil

C. They release energy into the atmosphere

D. They consume energy from higher trophic levels

A. They convert solar energy into chemical energy through photosynthesis

If the energy avaliable to the secondary consumer level is 30 J, how much energy was captured by the primary producer level?

A. 3000 J

B. 3 J

C. 300 J

D. 30,000 J

A. 3000 J

Which wavelength of light penetrates the deepest in water?

A. Orange light

B. Blue light

C. Green light

D. Red light

B. Blue light

In a simplified food web, if the quaternary consumer level recieves 5 J of energy, how much energy was avaliable at the primary consumer level?

A. 50 J

B. 500 J

C. 5000J

D. 0.5 J

C. 5000J

Which of the following statements best describes the relationship between a predator and its prey in a food chain?

A. Predators compete with prey for resources

B. Predators and prey have a mutually beneficial relationship

C. Prey rely on predators for protection, which predators benefit from consuming prey

D. Predators rely on prey for energy, while prey do not benefit from being consumed

D. Predators rely on prey for energy, while prey do not benefit from being consumed