AP Ecosystem (54) Quiz

15 Questions | By JLovrien | Updated: Mar 20, 2022 | Attempts: 197

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1.

Look at the following energy pyramid. If the producers have 7000 kcal of energy, how much energy will be available for the Sheephead ?fish?
- A.
  
  7 kcal
- B.
  
  70 kcal
- C.
  
  700 kcal
- D.
  
  7000 kcal
2.

Which level of this food pyramid represents the largest amount of organisms?
- A.
  
  Tertiary consumers
- B.
  
  Secondary consumers
- C.
  
  Primary consumers
- D.
  
  Producers
3.

Which of these best describes the relationship shown by this Kelp Forest Ecosystempyramid?
- A.
  
  The Giant Sea Bass is a predator of the Sheephead
- B.
  
  The Giant Sea Bass is the prey of the Sheephead
- C.
  
  Sea Urchins are the prey of the Kelp.
- D.
  
  Sheepheads are the predator of the Giant Sea Bass
4.

If birds eat insects that feed on corn, which pyramid level would birds occupy?
- A.
  
  A
- B.
  
  B
- C.
  
  C
- D.
  
  D
5.

An energy pyramid is used to show _________.
- A.
  
  The layout of organisms in any order seen fit
- B.
  
  The amount of energy in the universe
- C.
  
  The amount of energy at each trophic level
- D.
  
  Organized by organism size
6.

Net primary productivity represents
- A.
  
  The amount of biomass in excess of that needed to support plant cell respiration.
- B.
  
  The rate at which energy is captured during photosynthesis.
- C.
  
  The amount of carbon dioxide produced by plants.
- D.
  
  Energy production in an area per unit time.
- E.
  
  Plant reproduction per unit area per unit time.
7.

Primary source of carbon for photosynthetic organisms is:
- A.
  
  Bicarbonate in the water.
- B.
  
  Nitrate in the soil.
- C.
  
  Carbon dioxide in the atmosphere and water.
- D.
  
  Dissolved phosphate in water.
- E.
  
  Carbonic acid in rain.
8.

Which of the following terms is synonymous with photosynthetic organisms?
- A.
  
  Primary consumer and autotroph
- B.
  
  Primary producer and autotroph
- C.
  
  Primary producer and heterotroph
- D.
  
  Primary consumer and heterotroph
- E.
  
  Primary consumer and producer
9.

Which of the following statements reflects a key concept about ecosystems?
- A.
  
  Matter moves linearly through different systems, both abiotic and biotic, within an ecosystem
- B.
  
  There is a one-way flow of energy through the food webs of ecosystems
- C.
  
  Conservation should focus on the success and survival of individual species
- D.
  
  The abiotic environment does not influence the distribution and survival of particular organisms.
10.

What key factor limits the number of trophic levels in an ecosystem?
- A.
  
  Maximum solar radiation
- B.
  
  Energy loss
- C.
  
  Herbivore size
- D.
  
  Predator size
- E.
  
  Climate
11.

Fixation of carbon is accomplished by:
- A.
  
  Photosynthetic organisms.
- B.
  
  Primary consumers
- C.
  
  Decomposers.
- D.
  
  Bacterial decomposers.
- E.
  
  Burning of organic matter.
12.

The major atmospheric components of Earth, from the lowest concentration to the greatest concentration, are:
- A.
  
  Nitrogen, carbon dioxide, and oxygen.
- B.
  
  Nitrogen, oxygen, and carbon dioxide.
- C.
  
  Carbon dioxide, nitrogen, and oxygen.
- D.
  
  Carbon dioxide, oxygen, and nitrogen.
- E.
  
  Oxygen, nitrogen, and carbon dioxide.
13.

The causes of increased carbon dioxide being released into the atmosphere include:
- A.
  
  The burning of fossil fuels such as coal and gasoline.
- B.
  
  The burning of wood.
- C.
  
  Cattle production.
- D.
  
  Heating with natural gas.
- E.
  
  All of these.
14.

Fixation of nitrogren is usually accomplished by
- A.
  
  Corn
- B.
  
  Algae
- C.
  
  Bacteria
- D.
  
  Lichens
- E.
  
  Photosynthetic producers
15.

The total amount of organic food produced in an ecosystem is measured by
- A.
  
  Primary productivity
- B.
  
  Gross primary productivity
- C.
  
  Net primary productivity
- D.
  
  Food web
- E.
  
  Nitrogen cycle