Benchmark Review - Ecosystems

All plants receive the same amount of light in a forest.

• True - sunlight hits them all with the same amount of energy

• False - plants can exist at high and low levels, receiving different amounts of light

Plants need various types of nutrients to survive and grow.

• True - Nitrogen, Phosphorous, Sulfur, etc.

• False - they only need water and Nitrogen

Limiting Factors are ____________ for plants.

• good - these factors keep the population in check

• bad - these factors can keep the plants from normal growth

Competition is exactly what it means...

• it is when animals and plants fight for survival

• it is when similar species have to fight for survival

• it is when different species get along to fight off other animals

• none of these

When there is a limited supply of resources in an ecosystem there is more competition.

• True - species will have to be more aggressive to survive

• False - organisms begin to work together in their community

What would be the best description of the job of fungi or fungus?

• they are scavengers because they prey on smaller organisms

• they are decomposers because they are in constant competition for organic materials to ingest nutrients

• elements are released when they consume organic matter

• fungi release oxygen into the air and nutrients into the soil to help other plants to start the energy cycle over again

The biome an animal lives in cannot be easily changed.

• True - they rely on the rainfall and temperatures of their environment

• False - animals can easily transfer between ecosystems and environments

Does the pH of soil affect plant growth?

• Yes - pH determines the types of plants that can survive in an area

• Nope it does not

The parts of an ecosystem that are currently living or that have once lived.

• Biotic Factor
• Abiotic Factor
• Species
• Biome

Tags

NGSS.MS-LS2-3

NGSS.MS-LS2-4

NGSS.MS-LS4-1

The factors in an ecoysystem that have never had the ability to live.

• Biotic Factor
• Abiotic Factor
• Biome
• Community

Tags

NGSS.MS-LS2-3