Chapter 18-Populations and Communities Lesson 1

What is meant by community?

• The whole population of one species living together in a defined area.

• The symbiosis of different species occupying the same area.

• The social structure and diversity of a species in a given area.

• Populations of different species occupying the same area simultaneously.

What causes competition?

• need for status within the group

• limited supply of essential resources

• prospect of winning

• over abundance of essential supplies

Tags

NGSS.MS-LS2-1

What name is given to any variable which restricts the growth of a population?

• population growth

• competition factor

• biotic potential

• limiting factor

Tags

NGSS.MS-LS1-5

When is a species considered to be extinct?

• When the death rate surpasses the birthrate exponentially.

• After a species has been declared threatened for several years.

• After an endangered species fails to increase their population size.

• When there is no individual of the species left.

Tags

NGSS.HS-LS4-5

What is migration?

• A population's instinctive seasonal movement to another place.

• The conscious movement of a population from one place to another.

• The inflow of new species into an occupied habitat.

• The seasonal exchange of places between two species.

The largest population that an environment can support

• carrying capacity
• ecosystem
• adaptation
• limiting factors

Tags

NGSS.MS-LS2-4

A(n) ______ is a group of organisms that are physically similar and can mate with each other to produce offspring that can also mate and reproduce.

• organism
• species
• population
• community

the study of how living things interact with each other and the environment is called...

• Economy

• Ecology

• Eco-friendly

• Biodiversity

Tags

NGSS.MS-LS2-2

What is a condition that halts population growth?

• limiting factors

• renewable resources

• climate

• conservation

Tags

NGSS.MS-LS2-4

NGSS.MS-LS2-1

What is a population ?

• Disturbance has removed vegetation but left soil intact.

• The natural birth, growth and development of ecosystem.

• All organisms of a species that live in the same area.

• A community of interacting organisms and their environment.