LS 2-4: Ecosystem Energy and Matter Quiz

Which process is responsible for converting carbon dioxide and water into glucose and oxygen using sunlight?

• Respiration

• Photosynthesis

• Decomposition

• Fermentation

Tags

NGSS.MS-LS1-6

What is the main source of energy for most ecosystems on Earth?

• The Moon

• The Sun

• The Wind

• The Soil

Tags

NGSS.MS-LS2-3

NGSS.MS-LS1-6

Which of the following best describes a food web?

• A single pathway of energy flow

• A network of interconnected food chains

• The process of photosynthesis

• The movement of water in an ecosystem

Tags

NGSS.MS-LS2-3

Which equation correctly represents aerobic cellular respiration?

Tags

NGSS.MS-LS1-7

Which group of organisms is primarily responsible for recycling nutrients in an ecosystem?

• Producers

• Decomposers

• Primary consumers

• Secondary consumers

Tags

NGSS.MS-LS2-3

Which of the following is a correct sequence of trophic levels in a food chain?

• Producer → Primary Consumer → Secondary Consumer → Tertiary Consumer

• Primary Consumer → Producer → Secondary Consumer → Tertiary Consumer

• Producer → Secondary Consumer → Primary Consumer → Tertiary Consumer

• Tertiary Consumer → Secondary Consumer → Primary Consumer → Producer

Tags

NGSS.MS-LS2-3

If a grassland ecosystem receives 10,000 kcal of energy from the sun, and only 10% of the energy is transferred from one trophic level to the next, how much energy is available to primary consumers?

• 10,000 kcal

• 1,000 kcal

• 100 kcal

• 10 kcal

Tags

NGSS.MS-LS2-3

Which statement best explains why there are usually fewer organisms at higher trophic levels in an ecosystem?

• There is more energy available at higher trophic levels

• Energy is lost as heat at each trophic level

• Organisms at higher levels reproduce faster

• Matter is destroyed at higher levels

Tags

NGSS.MS-LS2-3

A student observes that the population of fish in a pond decreases after an increase in algae. Which is the most likely explanation?

• More algae means more oxygen for fish

• Excess algae can lead to less oxygen in the water, harming fish

• Fish eat algae, so their population should increase

• Algae have no effect on fish

Tags

NGSS.MS-LS2-1

NGSS.MS-LS2-4

Which of the following is an example of a biogeochemical cycle?

• The flow of energy from the sun to plants

• The cycling of carbon through photosynthesis and respiration

• The movement of water through a pipe

• The transfer of heat in the atmosphere

Tags

NGSS.MS-LS2-3

NGSS.MS-LS1-6