SB5c and SB5d (Ecological Succession and Population Dynamics

A farmer abandons one of his fields, and over the years he noticed that one community is replaced by another community. This replacement represents part of

• A food chain

• An abiotic community

• A pyramid of energy

• An ecological succession

The sequence A through E represent stages of ecological succession in a given area. Which diagram shows the greatest number of pioneer organisms?

• A

• E

• C

• D

Tags

NGSS.MS-LS2-1

Years after lava from an erupting volcano destroyed an area, lichens started to grow in that area. These were replaced by grasses, shrubs, conifers and finally a deciduous forest. If the deciduous forest remains unchanged, it will be referred to as

• A pioneer community

• A climax community

• A food chain

• The biosphere

Which type of ecological succession begins with the presence of soil

• Primary Succession

• Ecosystem Succession

• Secondary Succession

• None of the above

Which type of ecological succession begins without the presence of soil

• Primary succession

• Ecosystem succession

• Secondary succession

• None of the above

Biotic factors in the environment that have an increasing effect as population size

• Limiting factors

• Density-dependent factors

• Density-independent factors

• Carrying capacity

Tags

NGSS.MS-LS2-1

NGSS.MS-LS2-4

Abiotic factors in the environment that affect populations regardless of their density

• Density-dependent factors

• Limiting factors

• Density-independent factors

• Carrying capacity

All of the following are examples of limiting factors EXCEPT

• Food

• Time

• Temperature

• Water

Tags

NGSS.MS-LS2-1

The maximum population size that can be supported by available resources

• Limiting factors

• Dispersion

• Carrying capacity

• Immigration

Tags

NGSS.MS-LS2-1

NGSS.MS-LS2-4

African elephants play a critical role in balancing their ecosystem. Therefore, they are known as

• Abiotic factors

• Keystone species

• Predators

• Prey

Tags

NGSS.MS-LS2-4

NGSS.MS-LS2-2