Biology EOC Review: L.17.5 Ecosystems and Community & L.17.20 Human Impact and Energy Resources

T/F: The human population growth rate has always increased.

• TRUE

• FALSE

T/F: For thousands of years, the human population remained about the same because the environment’s natural carrying capacity for humans was much lower back then.

• TRUE

• FALSE

Tags

NGSS.HS-LS2-1

T/F: Primary succession is the most rapid form of succession because soil (and usually a few species) are already established.

• TRUE

• FALSE

Pioneer species generally pave the way for other species during succession because they form fruit.

• TRUE

• FALSE

After a huge fire on a temperate grassland, only bare rock and soil is left. According to primary succession, which of the following species would increase in number first?

• trees

• grasses

• herbs

• lichen

Ling feeds her guppies one-half teaspoon of fish food every day. The average guppy population in her aquarium over a four-month period is 38 guppies. She increased the food to one teaspoon per day. After a four-month period, the average population is 53 guppies. Which of the following statements is supported by these data?

• The size of the aquarium was a limiting factor.

• Food was a limiting factor.

• As long as Ling keeps adding more food, the guppy population will always continue to grow.

• Guppies reproduce rapidly.

Tags

NGSS.MS-LS1-5

NGSS.MS-LS2-1

NGSS.MS-LS2-4

Which of the following choices represents the sequences in the primary succession of an ecosystem?

• bare rock, small annual plants, lichens, shade-intolerant trees, shade tolerant trees, perennial herbs and grasses

• bare rock, lichens, small annual plants, perennial herbs and grasses, shade-intolerant trees, shade-tolerant trees

• bare rock, lichens, perennial herbs and grasses, small annual plants, shade-intolerant trees, shade-tolerant trees

• bare rock, lichens, small annual plants, perennial herbs and grasses, shade-tolerant trees, shade-intolerant trees

Which of these species might be classified as a pioneer species?

• ponderosa pine

• choke cherry

• aspen

• lichen

What is one major distinction between primary and secondary succession?

• Primary succession is the sequence of species that become established early in a newly colonized area, and secondary succession is the sequence of species that move in later.

• Primary succession is the establishment of a community in an area with no soil, while secondary succession is the establishment of a new community in an existing ecosystem that was disturbed.

• Primary succession is the establishment of a new community in an existing ecosystem that was disturbed, while secondary succession is the establishment of a community in an area with no soil.

• Primary succession is the sequence of plants that colonize a new area, while secondary succession is the sequence of animals that move in later.

American bison, which are large grazing mammals, are most often found clumped in small groups. What might you infer about the spatial distribution of American bison?

• A clumped group provides better protection from predators.

• A clumped group attracts more prey

• A clumped group can graze a larger area.

• A clumped group takes better advantage of water resources

Tags

NGSS.MS-LS2-1