Food Webs And Energy Transfer

13 Questions | By Ramymelhem | Updated: Mar 21, 2022 | Attempts: 625

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1.
1. If a lobster is 3 steps up a food chain from phytoplankton ( a producer), how much phytoplankton (in grams) would be needed to provide a human with a 600 g lobster dinner?
- A.
  
  6000 grams
- B.
  
  60,000 grams
- C.
  
  600,000 grams
- D.
  
  600 grams
2.

If the leeches were removed from the food web, which of the outcomes below might occur?
- A.
  
  The trout fishing industry might grow
- B.
  
  The bloodworm population loses a predator and their population size might increase
- C.
  
  There would be less bloodworms so the trout would have less to eat.
- D.
  
  There would be less Algae
- E.
  
  B and D
- F.
  
  C and D
3.

A hawk weighs about 15 pounds. What is the weight of grass that will be needed to support the life of 1 hawk.
- A.
  
  1.5 pounds
- B.
  
  1,500 pounds
- C.
  
  150,000 pounds
- D.
  
  15,000 pounds
4.

The Sun is an example of a/an:
- A.
  
  Producer
- B.
  
  Source of energy
- C.
  
  Biotic component of an ecosystem
- D.
  
  Omnivore
- E.
  
  None of the above
5.

Which of the following statements best describes the interaction of the two populations shown in the graph above?
- A.
  
  Species A is a predator; Species B is the Prey
- B.
  
  Species A and Species B are endangered species
- C.
  
  Species A is an insect; Species B is a plant.
- D.
  
  Species B is the predator; Species A is the prey.
6.

Bracket fungi return the nutrients in a dead log to the soil. They are classified as:
- A.
  
  Producers
- B.
  
  Scavengers
- C.
  
  Predators
- D.
  
  Decomposers
7.

The role of plants in maintaining the flow of energy in an ecosystem is to:
- A.
  
  Be a consumer
- B.
  
  Release energy in the form of heat
- C.
  
  Capture energy from an abiotic source and convert it into a biotic form
- D.
  
  Capture energy and convert it into an abiotic form.
8.

Which of the following is true regarding the pyramid of numbers?
- A.
  
  Zebras would be considered to be a herbivore.
- B.
  
  Carnivores occupy the greatest numbers in an ecosystem.
- C.
  
  Producers occupy the bottom of the pyramid because they have the greatest biomass out of all the Trophic Levels.
- D.
  
  Herbivores occupy a central position in the pyramid immediately above the producers.
9.

Both food webs and food chains can be used to illustrate the passage of energy in an ecosystem. What is the difference between a food web and a food chain?
- A.
  
  A food web contains decomposers while a food chain does not.
- B.
  
  A food chain contains decomposers while a food web does not.
- C.
  
  A food web contains all possible paths of energy while a food chain does not.
- D.
  
  A food chain contains all possible paths of energy while a food web does not.
10.

Which of the following statements is true regarding the energy flow model?
- A.
  
  Most of the energy in the food chain is concentrated in the producers.
- B.
  
  The least amount of energy in the food chain is concentrated in the producers.
- C.
  
  Carnivores like lions have the most energy because they weigh the most.
- D.
  
  Herbivores, like cows and zebras, have more combined energy than plants, because they have a lot of meat on their bodies.
11.

Based on the information provided in this food web, which animal would be classified as an omnivore?
- A.
  
  Deer
- B.
  
  Black bear
- C.
  
  Red fox
- D.
  
  Owl
12.

Based on the information provided in this food web, which of the following would happen if the owl went extinct.
- A.
  
  The red fox and the bear population would increase immediately.
- B.
  
  The red fox population would decrease at first.
- C.
  
  The rabbit population would suffer.
- D.
  
  The deer population would face an immediate shortage of berries.
13.

Which of the following would be true if a predator-prey graph was made between the black bear and the rabbit?
- A.
  
  The black bear population would be greater than the rabbit population.
- B.
  
  The rabbit population would follow after the black bear population.
- C.
  
  The black bear population would increase immediately after the rabbit population increases.
- D.
  
  The black bear population would follow the rabbit population, but only after a delay of a few years.