9 Wk. Review

Primary Succession is when -

• the ecosystem has pioneer species such as moss or lichen

• the ecosystem has pioneer species such as small grasses and shrubs

• the ecosystem is a result of a forest fire

• the ecosystem is a result of a flooding

What can prevent an ecosystem from growing into a climax community during succession?

• High biodiversity
• Low rainfall

• Stable climate conditions
• Environmental stressors and disturbances.

Secondary Succession is a result of what type of natural disturbance?

• Disturbances caused by volcanic eruptions
• Disturbances from seasonal weather changes
• Disturbances due to animal migration
• Disturbances like fire, flood, or human activity.

What is the final stage of succession?

• Climax community
• Intermediate community
• Transitional phase
• Pioneer species

Which organism absorbs carbon dioxide from the atmosphere to go through a process called photosynthesis?

• Producers (plants)

• Bacteria
• Fungi
• Animals

Which type of human activity affects our atmosphere the most?

• Planting trees
• Using solar panels
• Recycling plastic
• Burning fossil fuels
• Using oil as fuel for cars

What would happen to the atmosphere if a volcano erupted?

• Volcanic eruptions have no effect on the atmosphere whatsoever.
• The atmosphere will be filled with oxygen, improving air quality.
• The atmosphere can become cooler temporarily due to ash and gases, and may experience slower rates of photosynthesis.

• The atmosphere will become permanently warmer due to volcanic activity.

What would happen to animals in an ecosystem where a volcano has just erupted?

• Animals will thrive and reproduce rapidly.
• Animals may be killed, displaced, or have to migrate.

• All animals will gain new habitats immediately.
• No impact will occur on the animal population.

What is a herbivore (primary consumer)?

• A herbivore is an organism that can eat both plants and animals.
• A herbivore is an organism that primarily eats meat.
• A herbivore is an organism that only consumes fungi.
• A herbivore is an organism that primarily eats plants.

What is a carnivore (secondary consumer)?

• A carnivore is an organism that only eats plants.
• A carnivore is a primary consumer that feeds on producers.
• A carnivore is an organism that consumes other carnivores.
• A carnivore (secondary consumer) is an organism that eats primary consumers (herbivores).