Competition in Ecosystems

What are some examples of resources over which plants compete?

• space, water, and animals

• water, light , and space

• sugar, temperature and carbon dioxide

Tags

NGSS.MS-LS2-2

Hawks and owls eat the same type of food and struggle with one another to get their food. What is this an example of?

• Competition

• Biotic factor

• Symbiosis

• Population

Tags

NGSS.MS-LS2-2

This is a biotic factor:

• grass

• rocks

• soil

Tags

NGSS.MS-LS2-2

What are some examples of resources over which plants compete?

• space, water, and animals

• water, light , and space

• sugar, temperature and carbon dioxide

Tags

NGSS.MS-LS2-1

In a certain ecosystem, foxes and snakes prey on the same rabbits. What would INCREASE the competition between the foxes and snakes?

• An increase in foxes and snakes

• A smaller habitat for the foxes, snakes, and rabbits

• A reduction (fewer) rabbits in the ecosystem

• All of the above

Tags

NGSS.MS-LS2-1

NGSS.MS-LS2-2

NGSS.MS-LS2-4

What is competition in an ecosystem?

• How all the living and nonliving things in an area interact.

• A single, self-contained living thing

• An interaction between organisms or species in which both require a resource that is in limited supply

What is an ecosystem?

• Something in the environment that is needed for organisms to survive but is only available in fixed amounts

• A system that includes all the biotic and abiotic factors in an area and their interactions

• A system that includes all the biotic factors in an area and their interactions

Tags

NGSS.MS-LS2-3

Which factor is NOT abiotic?

• water

• seaweed

• sand

• sunlight

Tags

NGSS.MS-LS2-3

Refer to the food chain above. If a disease causes most of the pike in the pond to die, what will most likely happen to the perch population?

• Osprey will eat the perch so the population of perch will decrease.

• The perch population will increase, which will cause a decrease in the minnow population.

• The perch population will stay the same because it has no predator.

Tags

NGSS.MS-LS2-1

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NGSS.MS-LS2-4

A student wants to investigate competition between two organisms. For the investigation, it is most important that the student should choose organisms that –

• reproduce at a faster rate.

• are both active during the night.

• have the different adaptations.

• require the same resources.

Tags

NGSS.MS-LS2-1