STAAR Biology Ecology

Check off ALL of the examples of biotic factors below. (Choose all that apply.)

• Soil

• Rocks

• Birds

• Fish

Tags

NGSS.MS-LS1-4

Since species within an ecosystem depend on one another, why don't populations of species continuously grow? 

• Not enough food, water, shelter

• Organisms don't reproduce

Tags

NGSS.MS-LS2-1

NGSS.MS-LS2-4

What is a population?

• organism 

• Groups of individuals of the same species living in a particular area

• All life, biotic and abiotic in an area

• Groups of non-related/multiple species living in the same area

All the nonliving parts of an ecosystem are referred to as:

• the community

• biomes

• biotic factors  

• abiotic factors

Which of the following would be a biotic factor in an ecosystem?

• soil  

• bacteria

• rainfall

• temperature

Which statement best describes the flow of energy as it passes through the organisms in the pyramid (read carefully)

• Energy flows through the organisms from bottom to top and increases at each level

• Energy flows through the organisms from bottom to top and stays the same at each level

• Energy flows through the organisms from top to bottom and inc. at each level

• Energy flows through the organisms from bottom to top and decreases at each level

Tags

NGSS.MS-LS1-6

NGSS.MS-LS2-3

A(n) ______ is all living and nonliving things in a particular area that interact with one another

• Biome

• Community

• Ecosystem

• Population

Tags

NGSS.MS-LS2-3

Decomposers are important in the food chain because they

• Produce their own food using sunlight from the sun

• Stop the flow of energy from one organism to another

• they are microscopic and other organisms cannot consume them

• They break down organisms & recycle nutrients into the soil

Tags

NGSS.MS-LS2-3

Which statement best describes what will happen if the population of herbivores in the community decreases

• The pop. Of foxes will increase

• The pop. of hawks will inc.

• The pop. of rabbits will increase

• The pop. of meadow plants will inc.

Tags

NGSS.MS-LS2-1

NGSS.MS-LS2-4

What is the largest geographic area that contains all ecosystems on earth called

• Biome

• Biosphere

• Ecosystem

• Environment