Unit 1 Planet Earth Ecology Practice

If the gene pool of two populations are separated, the populations may develop into a new species. This is called:

• A natural selection

• B speciation

• C genetic separation

• D interspecific competition

Tags

NGSS.HS-LS4-2

NGSS.HS-LS4-4

The Kaibab squirrel became its own species when a small population was isolated on the northern rim of the Grand Canyon. Which type of speciation is this?

• A behavioral isolation

• B mechanical isolation

• C temporal isolation

• D geographic isolation

Tags

NGSS.HS-LS4-2

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

• A Tundra

• B Taiga

• C Alpine

• D Chaparral

Which of the following is an example of climate?

• A There is a cold front coming in this weekend.

• B A snowstorm is forecasted to hit the northeast US this week.

• C It is usually hot in Texas in July.

• D It rained 4 inches last week in Seattle, WA

Tags

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) (a)   .

Tags

NGSS.MS-LS2-2

NGSS.MS-LS2-4

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

• A keystone species

• B indicator species

• C pioneer species

• D secondary species

Which of the following is not true about mangrove trees?

• A their leaves excrete excess salt from brackish (mixture of salt and fresh) water

• B their large roots cause erosion

• C their roots provide shelter for fish and shark species

• D mangroves trees are threatened by tourism and shrimp farming

Tags

NGSS.MS-ESS3-4

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

• A Vegetation growing after a hurricane has destroyed a patch of land

• B Trees regrowing after deforestation

• C The recolonization of an area that has been burned by forest fire

• D The growth of lichens on a newly created volcanic island

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?

Tags

NGSS.MS-LS2-5

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

Tags

NGSS.MS-LS2-5