Ecological Pyramid Quiz

What does an ecological pyramid of numbers represent in a forest ecosystem?

• The total amount of energy captured by the organisms

• The biomass of organisms at each trophic level

• The number of individuals at each trophic level

• The reproductive rate of organisms

Why might a pyramid of biomass be distorted in aquatic communities?

• Because of the large number of producers

• Due to a peculiar reproductive rate

• Because of the uniform distribution of biomass

• Due to the small biomass of primary consumers

What percentage of energy is typically transferred from one trophic level to the next in an ecological pyramid of energy?

• About 10 percent

• About 50 percent

• About 1 percent

• About 90 percent

What is the conventional shape of a pyramid of biomass in a typical terrestrial community?

• Inverted pyramid

• Rectangular shape

• Pyramid with a large base

• Pyramid with a middle spike

Which trophic level in aquatic communities often has the largest number of trophic levels normally found?

• Producers

• Primary consumers

• Secondary carnivores

• The last trophic level with microscopic organisms

What does the base of the Pyramid of Numbers in a grassland ecosystem typically represent?

• Secondary carnivores

• Primary carnivores

• Herbivores

• Producers

Which level of the Pyramid of Biomass in a temperate forest is indicated by 'C'?

• Producers

• Herbivores

• Primary carnivores

• Secondary carnivores

In the Pyramid of Energy, which trophic level is represented by 'B'?

• Producers

• Herbivores

• Primary carnivores

• Secondary carnivores

Comparing the Pyramid of Numbers between grassland and temperate forest ecosystems, which one typically has a more uniform distribution of organisms across trophic levels?

• Grassland

• Temperate forest

• Both have a uniform distribution

• Neither have a uniform distribution

Which ecosystem's Pyramid of Biomass is inverted, indicating a smaller biomass of producers compared to other trophic levels?

• Grassland

• Open ocean

• Temperate forest

• None of the above