7th gr. -population Dynamics

Many woodpeckers eating at a bird feeder is an example of -

• predation

• mutualism

• competition

• commensalism

• parasitism

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NGSS.MS-LS2-1

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What happens to the population of a species after it reaches its carrying capacity?

• Increases linearly (in a straight line) over time.

• Increases exponentially (line is curved) over time.

• Decreases to zero in a very short amount of time.

• Remains relatively the same.

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NGSS.MS-LS2-1

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After a flood, a population of rabbits joins a different population of rabbits in a neighboring forest. 

Has emigration or immigration occurred?

• emigration

• immigration

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NGSS.MS-LS2-2

What does the whole right side of the population pyramid represent?

• Males

• Females

• Unemployed

• Young people

Discuss the factors that contribute to population dynamics.

• Factors such as birth rates, death rates, immigration, and emigration contribute to population dynamics or size.

• Factors such as the number of trees and types of birds in the area

• Factors such as weather patterns and soil composition

• Factors such as the price of goods and availability of jobs

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NGSS.MS-LS2-1

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What is carrying capacity in population ecology?

• Maximum number of individuals a species can produce

• Maximum number of individuals the environment can sustain

• Average number of individuals in a population

• Minimum number of individuals the environment can sustain

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NGSS.MS-LS2-1

List and explain the characteristics of a population.

• Size, density, dispersion, age structure, and growth rate

• Food availability, water source, shelter, predators, and competition

• Climate, geography, economy, culture, and language

• Color, weight, height, intelligence, and speed

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NGSS.MS-LS4-4

What are 2 biotic factors and 2 abiotic factors in the picture?

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Which of the following events would lead to an increase in the population of squirrels?

• Birth rate > Death rate

• Emmigration > Immigration

• Increase of predator

• Death rate increases due to a forest fire

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NGSS.MS-LS2-1

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Which of the following is an example of a biotic limiting factor in an ecosystem?

• New predators move into an ecosystem

• A drought occurs for several months

• A hurricane passes through an ecosystem

• Living space is lost due to deforestation

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NGSS.MS-LS2-2

NGSS.MS-LS2-4