Aquatic Ecosystems, Succession, and Population Ecology

Is weather a biotic or abiotic factor?

• Biotic

• Abiotic

• Both

• Neither

Which type of succession occurs on abandoned farmland?

• Primary Succession

• Secondary Succession

• Both

• Neither

Which type of succession starts with the smallest organisms and grows into large organisms, eventually resulting in a climax community?

• Primary Succession

• Secondary Succession

• Both

• Neither

What is the role of pioneer species in ecological succession?

• They are the last to appear in a climax community

• They break down rock into usable soil

• They are large animals that dominate the ecosystem

• They prevent other species from growing

What happens during the climax community stage of succession?

• Only small plants grow

• Large animals and large plants dominate

• Soil is created by bacteria

• Pioneer species are the only organisms present

What is the main difference between Primary and Secondary Succession?

• Primary Succession occurs faster

• Secondary Succession starts with no soil

• Primary Succession starts with no soil

• Secondary Succession takes longer

Tags

NGSS.MS-LS2-4

Mosses and algae mats in a pond sometimes kill fish and other aquatic wildlife because they .....

• block sunlight from the surface which affects oxygen production by producers

• increase the temperature of the water

• infect other organisms and cause disease

• crowd out other life forms

Tags

NGSS.MS-LS1-6

NGSS.MS-LS2-1

NGSS.MS-LS2-4

Which aquatic zone would you find organisms like algae, corals and phytoplankton?

• Photic

• Aphotic

• Benthic

• None of these

Tags

NGSS.MS-LS1-6

NGSS.MS-LS2-3

If a population grows larger than the carrying capacity of the environment, which of these is most likely to happen first?

• The death rate may rise

• The birthrate may rise

• The death rate must fall

• The birthrate must fall

Tags

NGSS.MS-LS2-1

NGSS.MS-LS2-4

What happens to a population when it reaches its carrying capacity?

• It continues to grow

• It declines rapidly

• It stabilizes

• It decreases slowly

Tags

NGSS.MS-LS2-1

NGSS.MS-LS2-4