Ecology Practice #1 (no energy)

A food web is diagrammed.
What would MOST likely happen if the rabbit population decreased as a result  of another predator being introduced to the food web?

• the fox population would decrease
• the food web would not be affected
• the bird population would increase
• the spider population would decrease

An ecosystem has a stable population of white tailed deer.  What is the MOST likely outcome if a new species of deer that competed for the same resources were introduced?

• the white tailed deer population would increase
• the producer population would decrease
• the white tailed deer population would not be affected
• the predator population would decrease

A consumer gets energy by doing what?

• Making it themselves.
• Breaking down biotic wastes and dead organisms and returning raw materials to the ecosystem.
• Soaking it up from the ground.
• Feeding on other organisms.

Tags

NGSS.MS-LS2-3

NGSS.MS-LS1-7

Grass is considered a ...

• consumer
• producer
• decomposer
• composers

Tags

NGSS.MS-LS2-3

NGSS.MS-LS1-6

An organism that uses sunlight to create its own food is known as a:

• Producer
• Heterotroph
• Consumer
• Decomposer

Tags

NGSS.MS-LS2-3

NGSS.MS-LS1-6

Which of these shows a possible food chain for an ecosystem?

• shark--> fish --> plankton -->sun

• sun --> plankton --> fish --> shark

• plankton --> sun --> fish --> shark

• plankton --> fish --> shark --> sun

Tags

NGSS.MS-LS2-3

NGSS.MS-LS2-2

If the snake population decreased, which group would increase in number?

• Producers

• Primary consumers

• Secondary consumers

• Tertiary consumers

• Decomposers

Which is the primary consumer in this food chain?

• rabbit

• grass

• snake

• hawk

Tags

NGSS.MS-LS2-3

Yellowfin tuna, or Thunnus albacores, are large sport fish that are found in tropical and subtropical waters around the world. They typically school under objects such as boats or patches of driftwood for protection from predators. Schooling under these structures also provides yellowfin tuna with easy access to a food source such as smaller herbivorous fish that may be foraging for food around the structures. Which trophic level does yellowfin tuna fill in a food chain?

• producer

• primary consumer

• secondary consumer

• tertiary consumer

Tags

NGSS.MS-LS2-3

Which organism is the primary consumer?

• Phytoplankton

• Gulls and terms

• osprey

• herbivorous duck

Tags

NGSS.MS-LS2-3