Common Assessment Review

Hawaii has many active volcanoes as a result of a hotspot on the ocean floor. How will succession impact the species diversity and populations of this area. Select all that apply.

• primary succession will cause an increase in both producer and consumer populations

• primary succession will cause species diversity to increase.

• secondary succession will cause species diversity to decrease

• primary succession will cause increase in producers, but decrease in consumers

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After a disturbance, an ecosystem that had been inhabited has lost all animal species as well as most plant species. How will succession take place and what impact will it have? Choose 2 correct answers.

• secondary succession will restart from the existing plant species in the ecosystem but plant diversity will decrease.

• secondary succession will restart from the existing soil, nutrients and plant species in the ecosystem, plant diversity will increase

• primary succession will restart from existing soil, nutrients and plant species in the ecosystem; plant diversity will increase.

• once plant species diversity increases, animal populations that depend on the plant will recover.

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NGSS.MS-LS2-4

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Biologists are studying L. pulchella, an invasive snail species, because of its significant effect on clam populations in a marine ecosystem. L pulchella feed on clams and clams feed on algae. Which options describe how L pulchella impacts energy transfer and biodiversity throughout the marine ecosystem? Choose 2

• L. pulchella will not have prey so they will be able to compete against other species. The clam population will also increase and compete with native species. Biodiversity will increase

• L. pulchella will not have predators in the new environment so they can grow without limit and compete against native species. Clams will increase, biodiversity will increase.

• L. pulchella will not have predators in the new environment, they can grow without limit and compete against native species. This will decrease biodiversity and disrupt energy transfers in food web.

• L. pulchella will cause a decrease in the clam population, which will cause an increase in the algae population. This will decrease biodiversity and disrupt energy transfers in the food web.

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NGSS.MS-LS2-4

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How do primary and secondary succession affect species diversity after ecosystems are disrupted by human activity?

• Primary and secondary succession both cause an increase in species diversity, therefore making the ecosystem more stable

• Primary and secondary succession both cause a decrease in species diversity, therefore making the ecosystem less stable

• Primary and secondary succession both cause an increase in species diversity, therefore making the ecosystem less stable

• Primary succession causes an increase in species diversity and secondary succession causes a decrease in species diversity

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NGSS.MS-LS2-4

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The biodiversity of species impacts the stability and sustainability of ecosystems. A group of jaguars have ___ types of prey to hunt in order to survive without running out of food,

• multiple

• many

• a variety of

• abiotic

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NGSS.MS-LS2-4

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A population of giraffes has ___ types of plants for them to graze upon.

• multiple

• many

• a variety of

• abiotic

Tags

NGSS.MS-LS2-1

Even animals that compete for similar prey, like lions and cheetahs, have ___ options.

• multiple

• many

• a variety of

• abiotic

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NGSS.MS-LS2-1

The animals also rely on ___ factors such as air and water to help them survive, which are sustainable natural resources.

• multiple

• many

• a variety of

• abiotic

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NGSS.MS-LS2-4

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The health of individual organisms is sustained by ___.

• biodiversity

• abiotic

• sustainably

• stable

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NGSS.MS-LS2-1

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An ecosystem with a lot of biodiversity uses ___ sources such as water.

• biodiversity

• abiotic

• stable

• food sources

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NGSS.MS-LS2-1

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