Ecology Test 2022

What is ecological succession?

• A series of predictable changes that occur in a community over time.

• It is the number of fish increasing.

• It is the seasons of the year.

• It is that rain follows cloud formation.

Primary succession begins where there was no ecosystem and no soil such as

• a severe storm

• a volcanic eruption

• an old farm is abandoned

• a forest fire

What is a pioneer organism? It is the ______ organism in _________ succession. 

• is the first , in primary succession
• is the last in secondary succession, 

What is a climax community?

• An ecosystem that is just beginning to grow.

• An ecosystem that is stable and mature and has reached the final stages of succession.

• An ecosystem that is damaged by a forest fire.

• An ecosystem that is damaged by a landslide.

How do lichens contribute to primary succession?

• Lichens decompose organic matter from animals and plants
• Lichens begin to break down rock to form soil
• Lichens are nitrogen fixing bacteria
• Lichens convert carbohydrates into fossil fuels.

What are examples of pioneer species in a primary succession?

• Bushes and Shrubs

• Oak trees

• Mossess and Lichens

• A rose Bush

An organism that gets energy from eating other organisms is a ______________.

• producer
• consumer
• decomposer
• prey

What is a herbivore?

• an animal that gets energy from eating other animals
• an organism that gets energy from eating only plants
• an animal that gets energy by eating both plants and other animals
• an animal that eats only herbs

An organism that gets energy from breaking down dead organisms, non-living material or waste is a(an) ___________.

• producer
• consumer
• decomposer
• autotroph

An animal that is hunted and eaten for food is a __________.

• predator
• prey
• population