IB ESS

According to the food web shown, what would occur if there were a drastic decrease in the squirrel population?

• There would be fewer vultures

• There would be more nuts and seeds.

• There would be fewer vultures & there would be more nuts and seeds.

• There would be more grass.

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NGSS.MS-LS2-1

NGSS.MS-LS2-2

NGSS.MS-LS2-4

At which trophic level can you find an herbivore?

• 1st Level

• 2nd Level

• 3rd Level

• 4th Level

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NGSS.MS-LS2-3

A population is defined as

• the individuals of a species

• a group of organisms in an ecological community

• the individuals of a species close enough in time and space to interact

• organisms in an ecological community close enough in time and space to interact

A fundamental niche is

• all conditions in which a species could survive

• the actual conditions in which a species survives

• trophic level, i.e. primary producer, secondary consumer, etc.

• the number of individuals an environment can support sustainably

A species' realized niche can be different from its fundamental niche due to -

• abiotic factors of the environment like sunlight

• interspecific interactions like competition and predation

• population fluctuating around an equilibrium level

• carrying capacity of the environment changing over time

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NGSS.MS-LS2-2

Carrying capacity of a habitat is determined by

• population growth rate

• limiting factors

• j versus s type population growth

• r and k survival strategies

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NGSS.MS-LS2-1

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In the sea, little fish called pilot fish swim closely to sharks. The pilot fish clean the sharks, and the sharks provide protection for the pilot fish. What type of symbiosis is this?

• Mutualism

• Commensalism

• Parasitism

• Amensalism

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NGSS.MS-LS2-2

The sum total of a population's use of the biotic and abiotic resources of its habitat constitutes its

• evolution.

• range.

• niche.

• environment.

In a hypothetical food chain (grass --> grasshoppers --> sparrows --> hawks) the grasshoppers are considered .... (Choose 2 answers)

• primary producers.

• secondary producers.

• primary consumers.

• secondary consumers.

• herbivores

Which of the following statements regarding food webs is true?

• Several species of primary consumers may feed on the same species of producer.

• A consumer eats only one type of producer.

• Detritivores consume dead organic matter from a specific trophic level.

• Nutrient transfer moves from producer to consumer and back.

Tags

NGSS.MS-LS2-2

NGSS.MS-LS2-3