Food webs and Nutrient Cycling

Why is glucose broken down during respiration?

• to release chemical energy

• to release oxygen for breathing

• to capture the sun's energy

• to absorb carbon dioxide from the environment

Tags

NGSS.MS-LS2-3

Which of the following is not needed by a plant to carry out photosynthesis?

• sunlight

• oxygen

• carbon dioxide

• water

Tags

NGSS.MS-LS1-6

NGSS.MS-LS2-3

The arrows in a food chain or web represents what?

• They point to the organism that is being eaten.

• They show what direction the energy is flowing between organisms.

• It shows how sunlight flows within an ecosystem.

• They represent how water is transferred within a habitat.

Tags

NGSS.MS-LS2-3

How much energy is available to be passed on to the next trophic level in an ecosystem?

• 700%

• 20%

• 5%

• 10%

Tags

NGSS.MS-LS1-6

NGSS.MS-LS2-3

In the energy pyramid here, which organisms have the most energy available?

• Top Predator

• Herbivores

• Carnivores

• Producers

Tags

NGSS.MS-LS2-3

What do you call organisms that eat ONLY producers?

• Carnivores

• Herbivores

• Omnivores

• Detritivores

In a freshwater ecosystem, ducks and snails eat grass and algae. The snails are eaten by mice and ducks. A fox will eat mice, but also ducks.

From this description, how would you describe the Mice?

• Producer

• Secondary Consumer

• Primary Consumer

• Apex Predator

Tags

NGSS.MS-LS2-3

1. Which of the following exist at all trophic levels, helping to break down dead organisms?

• producers

• primary consumers

• apex predators

• decomposers

Tags

NGSS.MS-LS2-3

1. Which of the following feeds at the lowest trophic level (primary consumer feeding on a producer)?

• coral polyp extends tentacles to feed on tiny zooplankton

• sea urchin grazes on kelp

• eel preys on a small, carnivorous fish

• sea turtle feeds on jellyfish

Tags

NGSS.MS-LS2-3

Which of the following is a byproduct of respiration?

• oxygen

• carbon dioxide

• glucose

• light