Redo Energy & Nutrient Quiz

A flea feeds on blood from a dog. There is no benefit to the dog, and the itching and bites can lead to infection. What type of symbiotic relationship does this display?

• commensalism
• Mutualism
• Parasitism
• Predation

The photosynthetic algae provide food for the fungus, which in turn provides a suitable living environment for the algae. What type of symbiotic relationship does this display?

• commensalism
• Mutualism
• Parasitism
• Predation

The Remora fish swim alongside the shark and take scraps of food that the shark drops during feeding. The shark does not eat the Remora and appears unaffected by its presence. What type of symbiotic relationship does this display?

• commensalism
• Mutualism
• Parasitism
• Predation

The amount of energy the producers have is 54,000 joules. From this amount, 54 joules are provided to the tertiary consumers. Based on the model shown below, how much of the energy was provided to secondary consumers?

• 53,460 J
• 5400 J
• 540 J
• 54 J

Which of the following will MOST LIKELY happen if the frog population decreases?

• Owls will have no source of food
• The snake population will increase
• Birds will have less competition for food
• The grasshopper population will go extinct

Which of the following is one way that energy flows in an ecosystem?

• from producer to producer
• from carnivore to producer
• from herbivore to carnivore
• from herbivore to herbivore

How is carbon removed from the atmosphere?

• respiration
• photosynthesis
• combustion
• decomposition

Why is lightning fixation an important part of the nitrogen cycle?

• It is the pathway for nitrogen to reach the soil
• It is the pathway for nitrogen to reach the atmosphere
• It is the pathway for nitrogen to be absorbed by consumers
• It is the pathway for denitrification.

The nitrogen cycle is driven by —

• bacteria in the soil
• the sun
• the water cycle
• lightning

Which of these does NOT add CO2 to the atmosphere?

• driving a car
• planting trees
• cooking with gas
• burning wood