Unit 4 Practice Exam

A lush deciduous forest recovering from a forest fire, with pioneer species like grasses and herbs sprouting, alongside a background of vibrant green trees and blue skies.

Ecological Knowledge Challenge

Test your understanding of ecological concepts and biological organization with this comprehensive quiz. Explore topics such as carrying capacity, succession, and the characteristics of different biomes.

Prepare to enhance your knowledge with questions covering:

Limiting factors in populations
Succession in ecosystems
Classification of aquatic ecosystems

14 Questions4 MinutesCreated by LearningTree42

Which of the following is a limiting factor in a population of organisms?

Reproductive replacement

Life spans of the members

Availability of food

Age of the members

Angel was trying to explain carrying capacity to her mother. Which of the following descriptions is accurate? Carrying capacity is:

The maximum number of individuals that an ecosysem can support

The ability ofan environment to accommodate a growing population

The number of predators that an area can sustain over the long term

The maximum number of species that can co-exist in a given area

When an environment has reached its carrying capacity for a certain population, which of the following is true?

Growth and immigration rate is equal to death and emigration rate

Growth and immigration rate is greater than death and emigration rate

Growth and immigration rate is less than death and emigration rate

Growth rate is exponential

The diagrams show some of the levels of biological organization. In what order are the levels in the diagram?

Organism -> community -> population

Organism -> population -> community

Ecosystem -> population -> community

Population -> community -> ecosystem

Which feature might be used to distinguish secondary succession from primary succession?

The lack of pioneer species in the second stage

The presence of pioneer species in the final stage

The presence of trees and large plants in the final stage

The presence of soil and organic matter in the first stage

A deciduous forest experiences a forest fire. As the ecosystem rebuilds, what organisms would you expect to recolonize the forest first?

Grasses and herbs

Lichens and mosses

Oak trees and pine trees

Birds and reptiles

The new island of Surtsey was formed near Iceland by a series of volcanic eruptions. Based on succession, which of these processes likely occurred first on Surtsey?

Animals moved onto the island.

Plants grew on the island

Volcanic rock broke down into soil.

A complex ecosystem developed.

What are the two abiotic factors used to define the major biomes?

Plant and animal life

Temperature and living organisms

Climate and precipitation

Ecologist classify aquatic ecosystems according to different types of cirteria. What are the two different types of water used to classify aquatic ecosystems?

Deep and moving

Hot and cold

Flowing and standing

Shallow and dark

In the aquatic food web, which two organisms have a predator-prey relationship?

Shad and sturgeons

Sturgeons and blue crabs

Blue crabs and rangia clams

Copepods and amphipods

In the aquatic food web , which two organisms have a competition relationship?

Blue crabs and sturgeons

Blue crabs and rangia clams

Amphipods and sturgeons

Striped bass and sturgeons

Unit 4 Practice Exam

Ecological Knowledge Challenge

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