Ecological Succession Quiz

What is ecological succession?

• The process by which a community acquires a fixed structure and composition.

• How an ecosystem gradually changes in species composition and community structure over time, after a disturbance has occurred.

• The immediate changes in an ecosystem following a natural disaster.

• The study of how species interact with each other within an ecosystem.

Which of the following can be considered a disturbance that might lead to ecological succession?

• A new species being introduced to an ecosystem.

• Regular seasonal changes.

• A volcanic eruption.

• The migration of animals.

What marks the beginning of primary succession?

• The presence of a dense forest

• The introduction of animal life

• The absence of plant life on the landscape

• The colonization by pioneer species

Which of the following are considered pioneer species in primary succession?

• Shrubs and trees

• Lichens and mosses

• Grasses and flowering plants

• Insects and birds

What is the role of pioneer species in an area after a disturbance?

• They prevent other species from colonizing the area

• They are the first to colonize the area and initiate ecological succession

• They only appear after a dense forest has formed

• They have no significant role in ecological succession

What is a Climax Ecosystem?

• An ecosystem that changes frequently due to constant disturbances.

• An ecosystem where plants and animals do not have a stable relationship with the environment.

• An ecosystem where plants and animals have a stable relationship with the environment and remain relatively unchanged until another disturbance occurs.

• An ecosystem that is in the early stages of development and lacks biodiversity.

What is the definition of invasive species?

• Species that are native to an area and beneficial to the local ecosystem

• Non-native species whose introduction into an area has caused ecological harm

• Species that are endangered and need protection

• Species that have adapted to live in multiple ecological zones

Which of the following organisms typically appears first during primary succession?

• Trees

• Grasses and annual flowers

• Mosses

• Bushes and shrubs

Which of the following organisms typically appears last during primary succession?

• Trees

• Grasses and annual flowers

• Mosses

• Bushes and shrubs

How do lichens alter the abiotic environment to favor the establishment of other species of plants?

• They do not help other plants to grow at all.

• They are a good food source for pollinators.

• They provide energy for other plants.

• They break down rock and form soil.