Levels of Organization and Changes in Population

This is an example of population, branch of the ecological levels of organization:

• A pack of wolves

• A dog

• A turtle interacting with a lizzard

• A squirrel on a tree

The picture shows this level of organization:

• Community

• Population

• Individual

Abby is walking to school with her best friend Jaylyn. They begin talking about everything they see including the ash trees, grass, weeds, ants, and people. They also notice how cold it is, how there are several large puffy clouds out, and how the sun is just starting to come up.  What level of organization are they discussing?

• community

• ecosystem

• biome

• biosphere

Andrea is on the grils cross country tream. She is heading out for a run when she comes across 20 Canadian geese.  What level of organization is this group of Canadian geese?

• organism

• population

• community

• biome

Which of the following represents a population in an ecosystem?

• A school of fish

• A coral reef

• A single oak tree

• A pond with frogs and fish

Tags

NGSS.MS-LS2-4

What level of organization is represented by a forest with trees, animals, and microorganisms?

• Population

• Community

• Ecosystem

• Biosphere

In a food chain, which level of organization does a group of deer represent?

• Organism

• Population

• Community

• Ecosystem

Which of the following is an example of a community?

• A herd of elephants

• A flock of birds

• A forest with various species of plants and animals

• A single lion

What is the primary factor that causes changes in population size?

• Climate change

• Predation

• Birth and death rates

• Migration

Tags

NGSS.MS-LS2-4

Which level of organization includes both biotic and abiotic factors?

• Population

• Community

• Ecosystem

• Organism

Tags

NGSS.MS-LS2-3