SC.4.L.17.3

What is an example of a prey?

• bear

• carnivore

• omnivore

• grasshopper

A food chain is pictured. Where does the mouse obtain its energy?

• From the sun

• From the plant seeds

• From the snake

• From the eagle

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NGSS.MS-LS2-3

Here are the components of a swamp ecosystem. Which of the following shows the correct food chain for the names listed?

• Sun->Frog->Cricket->Leaves

• Sun->Leaves->Frog->Cricket

• Sun->Leaves->Cricket->Frog

• Frog->Cricket->Sun->Leaves

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NGSS.MS-LS2-2

NGSS.MS-LS2-3

This is a food chain diagram. In the food chain diagram, what do the arrows represent?

• The life cycles of each organism

• How one organism changes to another

• How food is produced by many organisms

• The flow of energy through an ecosystem

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NGSS.MS-LS2-3

About 50% of Florida’s natural land is covered by forest. Look at the example of a Florida forest food chain. Which of the following living things is a predator?

• None are predators

• The earthworm

• The grass

• The fox

Tags

NGSS.MS-LS2-3

Use the food chain from question 4 to answer the question (above). Where does the producer in this food chain get its energy?

• From the earthworm

• From the sun

• From the bird

• From the fox

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NGSS.MS-LS1-6

NGSS.MS-LS2-3

Rhizobia are bacteria that live on the roots of some plants, such as legumes like pea plants. Rhizobia convert an element in the atmosphere into ammonia. Identify and explain the type of relationship this represents

• It is parasitism because the bacteria absorbs food from the pea plant

• It is commensalism because the bacteria and pea plant don't harm each other

• It is competition because the rhizobia and pea plant both need the limited amount of available nitrogen

• It is mutualism because the bacteria receives carbon from the pea plant, while the plant uses the ammonia to make amino acids

Tags

NGSS.MS-LS2-1

NGSS.MS-LS2-2

Native bumblebees live in grasslands and consume pollen and nectar from flowers. The bumblebees carry pollen from one plant to another. The bees pollinate most but not all the flowers in their habitat. Amphibians and insects, such as dragonflies, eat bumblebees.

A local resident sets up honeybee hives in the habitat of the bumblebees. Honeybees are a nonnative species that eat the same food as the bumblebees. Food now becomes a limiting factor for the bumblebees.

How might the populations of flowers, bumblebees, and dragonflies change after the introduction of honeybees to the ecosystem?

• Flowers will increase, bumblebees will decrease, and dragonflies will decrease in population size.

• Flowers will decrease, bumblebees will decrease, and dragonflies will decrease in population size.

• Flowers will increase, bumblebees will increase, and dragonflies will increase in population size.

• Flowers will decrease, bumblebees will decrease, and dragonflies will increase in population size.

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NGSS.MS-LS2-1

NGSS.MS-LS2-2

NGSS.MS-LS2-4

All organisms take energy from their environment. Every organism needs this energy in order to grow and reproduce. How do producers get energy?

• They obtain energy by eating plants, bacteria, and algae.

• They extract chemical energy from decaying organic matter.

• They extract energy from the chemicals in soil, air, and water.

• They capture energy from sunlight and manufacture their own food.

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NGSS.MS-LS1-6

NGSS.MS-LS2-3

How do the decomposers in an ecosystem obtain energy?

• They use the energy of photosynthesis from living plants.

• They release stored chemical energy from compounds in dead organisms.

• They extract energy-rich compounds from living tissues of other organisms.

• They obtain energy directly from the air, soil, or water of their environments.