Ecology Populations

Logistic growth has 3 phases. In Phase 1, the population grows rapidly. In Phase 2, population grows slowly. In Phase 3, growth stops. What causes growth to stop in the 3rd phase of logistic growth?

• Emigration

• Immigration

• Exponential Growth

• Carrying Capacity

What type of factor has an increasing impact as the population size increases?

• density-independent

• density-dependent

• cohort effect

• survivorship factor

What type of growth model is shown in image A?

• Exponential

• Logistic

Tags

NGSS.MS-LS1-5

The way in which individuals of a population are spread out is called

• population density

• survivorship

• population dispersion

• logistic curve

Which of these organisms is the secondary consumer?

• Owl

• Mouse

• Grass

• Grasshopper

Tags

NGSS.MS-LS2-2

How much energy is transferred between trophic levels?

• 25%

• 20%

• 10%

• 90%

Tags

NGSS.MS-LS1-6

NGSS.MS-LS2-3

Barnacles are animals that cannot move. In order to get food, they attach to whales and catch any floating plankton in the water. The whale is neither helped nor harmed in the interaction. What type of symbiosis is this?

• Mutualism

• Commensalism

• Parasitism

• Neutralism

Tags

NGSS.MS-LS2-2

In the wild, some alligators gets their teeth cleaned by birds. The birds gets their food from the alligators' teeth.

What type of symbiosis is this?

• Mutualism

• Commensalism

• Parasitism

• Neutralism

Tags

NGSS.MS-LS2-2

In this photo, what is an abiotic factor?

• Deer

• Grass

• rain

Tags

NGSS.MS-ESS2-5

What is this picture describing?

• It is describing natural selection.

• It is describing direct competition between flamingos and ducks.

• It is describing abiotic factors of the tundra.

• It is describing the niche of each bird.

Tags

NGSS.MS-LS2-2

NGSS.MS-LS2-3