Unit 1 Ecology Remediation 24-25

Reorder

Put the following in order from smallest group to largest.

• organism

• population

• community

• ecosystem

• biosphere

1

2

3

4

5

• 1
• 2
• 3
• 4
• 5

Multiple Choice

In a food chain, the arrow points to the

• Eater

• Eaten

• What arrows?

Multiple Select

In the food web provided, which organisms do the snake eat? Select two.

• Rabbit

• Mouse

• Bird

• Hawk

Multiple Choice

Which of the following best explains why the producers in an ecosystem have the most energy?

• Producers have the most energy because they convert sunlight into usable energy through photosynthesis.

• Producers have the most energy because they consume other organisms for energy.
• Producers have the most energy because they are at the top of the food chain.
• Producers have the most energy due to their ability to store nutrients from the soil.

Multiple Choice

In an ecosystem, the amount of energy produced by the autotrophs is 3000 kJ. How much energy would be available to the Secondary Consumers in this ecosystem?

• 3,000 kJ

• 300 kJ

• 30 kJ

• 3 kJ

Multiple Choice

As energy flows through each trophic level,

• 10% of available energy is passed to each increasing trophic level.

• 90% of available energy is passed to each increasing trophic level.

• Energy increases at each trophic level.
• Energy remains constant at each trophic level.

Multiple Choice

Which of the following situations would happen if the keystone species in an ecosystem were to become extinct?

• The ecosystem would become unbalanced, leading to potential collapse.
• Other species would easily replace the keystone species.
• The extinction would have no effect on the ecosystem.
• The ecosystem would thrive and become more diverse.

Match

Match the cycle to their key feature.

• Phosphorus Cycle

• Nitrogen Cycle

• Carbon Cycle

Rocks

Bacteria

Photosynthesis and Cellular Respiration

• Rocks

• Bacteria

• Photosynthesis and Cellular Respiration

Dropdown

Primary succession occurs when there is ​

Select answer

present after a disturbance.

Multiple Choice

Lichens secrete acids that often break up the rocks on which they live. Then other organisms, such as flowering plants, can grow on the rocks. Which process best describes the change the ecosystem is undergoing?

• Climax community development
• Secondary succession
• Ecological disturbance
• Primary succession

Multiple Choice

A disease that affects a mouse population spread out in a large field would have less impact than the same disease on a mouse population in a much smaller field because...

• Diseases are density-independent factors.

• A disease is not a limiting factor.

• Diseases are density-dependent factors.

• Diseases are abiotic limiting factors.

Multiple Choice

Which of the following values BEST represents the carrying capacity of this graph?

• 1,000

• 1,500

• 500

• 2,000

Match

Match the following following tropism to its stimulus.

• Thigmotropism

• Phototropism

• Geotropism

• Hydrotropism

touch

light

gravity

water

• touch

• light

• gravity

• water