Ecology Test 1 Retake

Which of the following descriptions about the organization of an organism is correct?

• Organisms make up cells that are made of the smallest unit of life

• Organisms are grouped in an ecosystem, which make up communities

• Tissues are made of cells and organ systems make cells.

• Cells make up tissues which make up organs which make up organ systems

Which of the following correctly shows the organization in an ecosystem, from the smallest to the largest level?

• Organism, Population, Community, Ecosystem

• Community, Ecosystem, Organism, Population

• Ecosystem, Community, Population, Organism

• Population, Community, Ecosystem, Organism

Which answer choice best describes a community?

• Different species of lizards occupying the same niche in a desert

• Praying mantises caring for their young

• Roosting mother bats recognizing their offspring

• Three-spined sticklebacks living in estuaries

Organisms that capture energy and produce food are known as ___________.

• Autotrophs

• Omnivores

• Heterotrophs

• Consumers

Which organisms should be classified in more than one trophic level?

• timber wolves that hunt and eat plant-eating animals

• maple trees, which are producers

• brown bears that eat berries, fish, and other plants and animals

  This

• monarch butterflies, which feed on milk weed plant

Using the food chain to the below, a snake that eats a lizard that has eaten an insect that fed on a plant is--

• primary consumer

• secondary consumer

• tertiary consumer

• producer

The diagram on the below illustrates the feeding relationships within an ecosystem. Approximately what percentage of the original amount of energy from producers is stored in the tissues of the rabbit?

• 100%

• 1%

• 10%

• 0.1%

A student is asked to draw a food web in which the same organism is a primary consumer as well as a secondary consumer. How should the organism be represented in the food web?

• The organism must have an arrow pointing from it to a primary consumer and another arrow pointing away from it to a decomposer.

• The organism must have an arrow pointing from it to a tertiary consumer and another arrow pointing from it to a decomposer.

• The organism must have an arrow pointing to it from a producer and another arrow pointing to it from a primary consumer

• The organism must have an arrow pointing from it to a secondary consumer and another arrow pointing to it from the top predator.

A marine ecosystem is represented on the below. What is lost to the environment at each of the trophic levels of this ecosystem?

• living space for the organisms

• heat

• food sources

• Nutrients from the soil

A biomass pyramid of an ecosystem is shown. What statement provides the best explanation for the difference in biomass of organisms found at each trophic level?

• Organisms at higher trophic levels require smaller habitats than organisms at lower trophic levels.

• Organisms at higher trophic levels have less energy available to them than organisms at lower trophic levels

• Organisms at lower trophic levels outcompete organisms at higher trophic levels.

• Organisms at lower trophic levels provide less energy than organisms at higher trophic levels.