Unit Test: Biomes, Succession & Biodiversity

A biome is cold, treeless and permanently frozen. Which type of biome is it?

• Tundra
• Taiga
• Alpine
• Chaparral

Which of the following is an example of climate?

• There is a cold front coming in this weekend
• A snowstorm is forecasted to hit the northeast US this week
• It is usually hot in Texas in July
• It rained 4 inches last week in Seattle, WA

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NGSS.MS-ESS2-6

Sea otters feed on sea urchins and help maintain their marine ecosystems by preventing sea urchins from overfeeding on kelp. Sea otters are an example of a(n)

• keystone species
• indicator species
• pioneer species
• secondary species

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Because frogs absorb both oxygen and toxins through their skin, they are very sensitive to air and water quality. This makes them an excellent

• keystone species
• indicator species
• pioneer species
• primary species

Which of the following is NOT true about mangrove trees?

• their leaves excrete excess salt from brackish (mixture of salt and fresh) water
• their large roots cause erosion
• their roots provide shelter for fish and shark species
• mangroves trees are threatened by tourism and shrimp farming

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NGSS.MS-LS2-1

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Which of the following is NOT an example of secondary succession?

• Vegetation growing after a hurricane has destroyed a patch of land
• Trees regrowing after deforestation
• The recolonization of an area that has been burned by forest fire
• The growth of lichens on a newly created volcanic island

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NGSS.MS-LS2-4

____________________ are the first organisms to colonize an area and begin the process of ecological succession.

• foundational organisms
• introductory organisms
• primary organisms
• pioneer species

Which of the following is NOT a type of biodiversity?

• species
• genetic
• ecosystem
• individual

Why do the populations of invasive species grow so quickly?

• Invasive species are native to an area
• Invasive species are prey to many animals
• Invasive species have no predators
• Invasive species keep the ecosystem in equilibrium

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NGSS.MS-LS2-4

A small measured area in a forest has 10 individuals present. Each of these individuals is a different species. Which is true about the biodiversity index of this area?

• The biodiversity index is 0.1
• The biodiversity index is low
• The biodiversity index would be higher if there were fewer species among the individuals
• The biodiversity index is 1

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NGSS.MS-LS2-5