AP BIOLOGY

ECOLOGY

ECOLOGICAL SUCCESSION

Question [CLICK ON ANY CHOICE TO KNOW THE RIGHT ANSWER]
What is an ecological succession?
A
Series of gradual changes that occur after a disturbance
B
Changes that only happen when species die
C
a series of changes that cause a population to increase or decrease
D
an INSTANT change caused by a disturbance
Explanation: 

Detailed explanation-1: -Ecological succession is the process by which the mix of species and habitat in an area changes over time. Gradually, these communities replace one another until a “climax community”-like a mature forest-is reached, or until a disturbance, like a fire, occurs. Ecological succession is a fundamental concept in ecology.

Detailed explanation-2: -Ecosystem succession, also called “ecological succession, ” is the process through which a natural community of plants and animals changes after a disturbance. It is generally understood that ecological succession is a progressive movement towards the most stable community (also called a “climax community").

Detailed explanation-3: -Succession is gradual change in the structure and makeup of an ecological community over time. This can happen in an area where a disturbance destroyed an existing ecosystem.

Detailed explanation-4: -In primary succession, newly exposed or newly formed rock is colonized by living things for the first time. In secondary succession, an area previously occupied by living things is disturbed-disrupted-then recolonized following the disturbance.

Detailed explanation-5: -The 5 stages of Ecological Succession in successive order are-Nudation, Invasion, Competition and Co-action, Reaction, and Climax or Stabilization.

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