WHS- Ecological Relationships

This is the largest number of individuals of a population that the environment can support...

• Carrying capacity

• Population crash

• Lag phase

• Mutualism

• Symbiosis

In a forest ecosystem, which of the following is the best example of a limiting factor that would significantly impact the rabbit population?

• The squirrel population

• The amount of sunlight

• Amount of grass available

• Other rabbits

• There is no such thing as a limiting factor in an environment

What do limiting factors do?

• Separate biotic factors from abiotic factors.

• Determine which is the predator and which is the prey.

• Regulate how many organisms live in an ecosystem.

• Determine which natural disasters will hit an area.

Tags

NGSS.MS-LS2-1

NGSS.MS-LS2-4

What happens when an environment reaches its carrying capacity?

• Populations will decrease

• Resources such as food, water, and space will be unlimited

• Populations will increase

• Nothing, everything will stay the same.

Tags

NGSS.MS-LS2-1

NGSS.MS-LS2-4

A species that plays a critical role in the health, maintenance, growth, or definition of an ecosystem.

• Keystone species

• Invasive species

• Ecosystem engineers

• Predator

• Prey

Reorder the following trophic levels:

• Producer

• Primary consumer

• Quaternary consumer

• Secondary consumer

• Tertiary consumer

Sea Otters are known as ​ (a)   species because without them, the ecosystem falls apart. Sea otters are ​ (b)   that eat sea urchins. The sea urchins eat kelp. Many fish and other ocean animals need kelp forests to survive.

• keystone
• secondary consumers
• primary consumers
• trophic
• invasive

Match the following equations to their description:

Birth= B, Death= D, Emigration = E, Immigration= I

• Stable Population

• (B + I) = (D +E)

• Growing Population

• (B + I) > (D + E)

• Declining Population

• (D + E) > (B + I)

What type of symbiosis?  Hummingbirds feed on nectar from flowers.  The flowers are then pollinated by hummingbirds as they move from flower to flower.

• Commensalism

• Mutualism

• Parasitism

• Predation

• Competition

A lion stalks a herd of antelope wading in a pond. A flock of water birds on the shore become startled by the sound of the lion’s approach and fly away with a great deal of noise. The birds’ sudden departure gives warning to the antelope, and they are also able to escape safely. What type of relationship exists between the birds and the antelope?

• Competition

• Mutualism

• Commensalism

• Parasitism

• Predation