Population Ecology Review

What is ecology?

• the study of interactions between organisms and their environments

• the study of animals

• the study of how genes are passed down from generation to generation

• the study of rocks

Match the following levels of classification to the pictures:

• Population

• 
• Community

• 
• Organism

• 
• Ecosystem

• 

Match the following levels of classification to their definitions:

• Ecosystem

• All the biotic and abiotic things

• Organism

• All the same species

• Population

• All the different living things

• Community

• 1 individual

Tags

NGSS.MS-LS4-2

All the living things in an ecosystem are the ​ (a)   factos. The nonliving things are ​ (b)   .

• biotic
• abiotic

Answer explanation

Bio = life

A = not

Tags

NGSS.MS-LS2-3

Select all that apply: Which of the following are biotic factors?

• Rocks

• Water

• Moss

• Bacteria

Answer explanation

Moss and bacteria are both living things.

Tags

NGSS.MS-LS2-3

NGSS.MS-LS2-4

Select all that apply: Which of the following are abiotic factors?

• Sand

• Water

• Animals

• Plants

Answer explanation

Sand and water are both nonlivg (abiotic)

Tags

NGSS.MS-LS2-3

What two factors increase the population size?

• Births

• Deaths

• Immigration

• Emigration

Answer explanation

Births + immigration (individuals joining the population) cause the population size to increase.

What two factors decrease the population size?

• Births

• Deaths

• Immigration

• Emigration

Answer explanation

Deaths + emigration (individuals leaving the population) cause the population size to decrease.

Tags

NGSS.MS-LS2-4

Carrying capacity is the ​ (a)   number of organisms that can survive in an area based on the available ​ (b)   , such as food and water.

• maximum
• resources
• minimum
• predators

Tags

NGSS.MS-LS2-1

NGSS.MS-LS2-4

Draw a line to show the carrying capacity

Tags

NGSS.MS-LS2-1

NGSS.MS-LS2-4