11-Biology- Principles of Ecology

What do ecologists study?

• The chemical properties of soil only

• The relationships between organisms and their environment

• The genetic variations within populations

• The structure of the earth's crust

Tags

NGSS.MS-LS2-1

NGSS.MS-LS2-2

NGSS.MS-LS2-3

NGSS.MS-LS2-4

Which of the following is an abiotic factor?

• Plants

• Animals

• Water

• Bacteria

What is the primary source of energy in most ecosystems?

• Wind

• The Sun

• Geothermal heat

• Water currents

Tags

NGSS.MS-LS1-6

NGSS.MS-LS2-3

In a food chain, what is the term for organisms that produce their own food?

• Herbivores

• Carnivores

• Producers

• Decomposers

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NGSS.MS-LS1-6

Which of the following best describes a food web?

• A linear sequence of who eats whom in an ecosystem

• A system that recycles nutrients in an ecosystem

• A complex network of feeding relationships in an ecosystem

• A single pathway of energy flow in an ecosystem

Tags

NGSS.MS-LS2-3

What is the process called where water cycles from the earth's surface to the atmosphere and back?

• Nitrogen fixation

• The carbon cycle

• The water cycle

• Photosynthesis

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NGSS.MS-ESS2-4

Which of the following is a biotic factor in an ecosystem?

• Temperature

• Humidity

• Plants

• Rocks

Tags

NGSS.MS-LS1-4

What role do decomposers play in an ecosystem?

• They produce their own food through photosynthesis

• They consume living plants and animals

• They break down dead organisms and recycle nutrients

• They regulate the temperature of the ecosystem

Tags

NGSS.MS-LS2-3

In which way is energy transferred through an ecosystem?

• From producers to decomposers to consumers

• From consumers to producers to decomposers

• From producers to consumers to decomposers

• Energy is not transferred; it is recycled

Tags

NGSS.MS-LS2-3

What is the term for the variety of life in the world or in a particular habitat or ecosystem?

• Ecology

• Biodiversity

• Conservation

• Biome

Tags

NGSS.MS-LS2-5