Energy Flow in Ecosystems

In this food web, how many different organisms feed on the producer?

• 1

• 2

• 3

• 4

Tags

NGSS.HS-LS2-4

If the bird population DECREASED, which populations would INCREASE as a result?

• bees and deer

• bees and grasshoppers

• snakes and hawks

• grasshoppers and rabbits

Tags

NGSS.MS-LS2-1

NGSS.MS-LS2-4

NGSS.MS-LS2-2

Which is an apex predator in this food web? (Hint: pay close attention to the arrows!)

• squid

• penguin

• seal

• krill

Tags

NGSS.MS-LS2-3

In this aquatic food web, which organisms eat the squid?

• It has no predators

• seagull and krill

• seal and krill

• seal and seagull

Tags

NGSS.MS-LS2-2

In this food web, a ___ is a primary consumer and a ___ is a secondary consumer.

• deer, eagle

• grasshopper, mouse

• mouse, snake

• tree, grasshopper

Tags

NGSS.MS-LS2-1

If a disease eliminated the hawk population, which population would immediately INCREASE?

• grasshopper

• snake

• grass

• hawk

Tags

NGSS.MS-LS2-1

NGSS.MS-LS2-4

NGSS.MS-LS2-2

If a disease eliminated the frog population, which population would immediately INCREASE?

• grasshopper

• snake

• hawk

• grass

Tags

NGSS.MS-LS2-1

NGSS.MS-LS2-4

NGSS.MS-LS2-2

If a disease eliminated the snake population, which population would immediately DECREASE?

• hawk

• frog

• grasshoppers

• grass

Tags

NGSS.MS-LS2-1

NGSS.MS-LS2-4

A species on which other species in an ecosystem largely depend, and if it were removed, the ecosystem would change drastically.

• endangered species

• keystone species

• primary species

• apex species

Tags

NGSS.MS-LS2-4

NGSS.MS-LS2-2

When energy is passed in an ecosystem from one trophic level to the next, only ___ percent of the energy will be passed on.

• 1000

• 100

• 1

• 10

Tags

NGSS.MS-LS2-3