Populations and Succession

Which of the following will increase the size of a population?

• emigration and births

• immigration and deaths

• immigration and births

• emigration and deaths

Estimate the carrying capacity.

• 100 deer

• 80 deer

• 60 deer

• 40 deer

Tags

NGSS.MS-LS2-1

NGSS.MS-LS2-4

According to the graph, what is causing the deer population to decrease

• They got sick

• The wolf population is decreasing

• The wolf population increased

• They ran out of food

Tags

NGSS.MS-LS2-2

NGSS.MS-LS2-4

Predator population lags behind prey population because......

• Increase in predators leads to decrease in prey

• Increase in predators leads to increase in prey

• Increase in predators leads to decrease in producers

• Increase in producers leads to increase in prey

Tags

NGSS.MS-LS2-1

NGSS.MS-LS2-2

NGSS.MS-LS2-4

What is the name given to lichen or algae after a primary succession?

• pioneer species

• volunteer species

• founder species

• conqueror species

Once an ecosystem fully recovers from a disturbance it is called?

(a)  

• climax community

• pioneer species

• secondary succession

• primary succession

Some student take care of a vegetable garden. When it is time to plant in the spring, the students leave part of the garden empty in order to observe ecological succession. Which of these will most likely occur first?

• Development of topsoil

• Growth of weeds and grasses

• Growth of trees and shrubs

• Development of a stream

Tags

NGSS.MS-LS2-3

After a forest fire, Elijah noticed that the area began to show signs of life again over time. This process is known as secondary succession. How does it differ from primary succession?

• Begins in a lifeless area where soil is not present

• Occurs in areas where existing communities have been disturbed but soil remains

• Only occurs after a volcanic eruption

• Does not involve pioneer species

Answer explanation

Secondary succession differs from primary succession by occurring in areas where existing communities have been disturbed but soil remains.

Tags

DOK Level 1: Recall

Final illustration (#8) shows

• pioneer species

• climax community

• only biotic factors

• only abiotic factors

The process of gradual change from one community of organisms to another is called ​ ​ (a)   .

• primary succession

• secondary succession

• succession