NEW
Font size
WorksheetsUnit 2: Energy Flow Review
Total questions: 21
Worksheet time: 17mins
CO2 + H2O + Sunlight are the ingredients of photosynthesis. What are the PRODUCTS?
Glucose only
Oxygen only
Glucose and oxygen
Water and CO2
When energy is transferred, what percent gets "lost" as heat or used by the organism for growth and cell maintenance?
80%
90%
10%
20%
Which of the following trophic levels has the most available energy in an ecosystem?
Producers
Herbivore
Omnivore
Carnivore
In this energy pyramid, which organism would most likely be in level 2?
bird (omnivore)
fox (carnivore)
caterpillar (herbivore)
tree (producer)
A butterfly pollinates a flower and in return, gets nectar from the flower. What is the relationship between these two organisms?
Commensalism
Interspecific competition
Parasitic
Mutualism
Which of the following best described the predator-prey cycle?
Increase in prey leads to increase in predators, with lag time
Increase in predators leads to increase in prey, with lag time
Increase in predators leads to decrease in producers
Increase in producers leads to increase in prey
Camouflage is an example of an ______________________ that prey might have to survive.
Niche
Prey
Competition
Adaptation
Two pine trees competing for access to sunlight is an example of:
Interference
Intraspecific competition
Interspecific competition
Predator-prey
A landslide destroys the number of producers in the habitat. As the population of deer decreases as a result, the population of the predator which eats it will...
In the energy pyramid below, which organism has the least amount of energy available?
Producers
Herbivores
Carnivores
Top Predator
energy decreases as you go up the food chain, just like the pyramid shape gets smaller as you go up.
energy increases up the food chain just like the pyramid shape gets smaller as you go up.
energy amounts are the same at each trophic level
Energy fluctuates with each trophic level
What percentage of energy is transferred if the apex predator eats a primary consumer?
0.1%
0.006%
0.6%
160%
What percentage of energy is transferred when the smaller fish eat snails?
10%
11%
8.8%
.11%
Why are predators essential to ecosystems?
Keeping prey populations healthy
Controlling the gene pool (natural selection)
Prevention of prey overpopulation
All of the above
Over time, predators with better eyesight survive and reproduce and simultaneously, prey that are better camouflaged survive and reproduce. This is an example of:
Extirpation
Co-evolution
Divergent evolution
Lamarckian logic
TRUE or FALSE: Removal of predators will increase the biodiversity of an ecosystem
True
False
Sea otters are removed from the ecosystem and as a result, the urchin population explodes and as a result, reduces the overall biodiversity of the ecosystem. This describes:
Co-evolution
Lag time
Trophic cascade
Mutualism
When wolves were extirpated from Yellowstone, it caused a trophic cascade due to overpopulation of elk. Which ecological problem was NOT caused by elk?
Few trees were on river banks
Small mammals couldn't hide from predators due to less grass and shrub cover.
Weather patterns changed and there were more severe storms.
Rivers were muddy, making it harder for fish and amphibians to survive.
