Title: Unit 13 Quiz
Course: BIS 205 Field Ecology - Copy > Section: BIS 205 Field Ecology - Copy

Q: What impact does canopy shading have on the community in the Piedmont Plateau of North Carolina?
- Canopy shading by deciduous trees is required for growth of pines.
- Canopy shading by deciduous trees prevents pines from establishing until late in succession.
- Canopy shading by deciduous trees prevents persistence of pines in late successional stages.
- Canopy shading by pines prevents establishment of deciduous trees.
- Canopy shading by pines kills deciduous trees seedlings.
A: Canopy shading by deciduous trees prevents persistence of pines in late successional stages.

Q: The ability of an ecosystem or community to bounce back after disturbance is called [_____]
A: resilience

Q: The final stable community in an ecological succession is called
- final community
- climax community
- pioneer community
- ultimate community
- seral community
A: climax community

Q: [_____] is the ability of a community or ecosystem to maintain structure in the face of potential disturbance.
A: Resistance

Q: Name and describe three mechanisms of succession that influence ecosystem communities.

Q: The Park Grass Experiment, one of the longest long-term ecological study sites, found what occurred to the biomass percentage of grasses, legumes, and other plant species from 1910 to 1948?
- Grass biomass decreased while legume and other species increased across all sites.
- Legume biomass decreased while grass biomass increased at all sites.
- Grasses and legumes both decreased while other species increased.
- Grasses and legumes both increased while other species decreased.
- No major change in the percentages of the different groups of plants.
A: No major change in the percentages of the different groups of plants.

Q: Keever found succession in old fields of the Piedmont Plateau region of North Carolina generally following which pattern of species?
- horseweed, crabgrass, broomsedge, aster
- broomsedge, aster, horseweed, crabgrass
- horseweed, aster, crabgrass, broomsedge
- crabgrass, horseweed, aster, broomsedge
- aster, crabgrass, horseweed, broomsedge
A: crabgrass, horseweed, aster, broomsedge

Q: Which of the following species may be classified as a pioneer species?
- lichen
- burr oak
- sugar maple
- white spruce
- aspen
A: lichen

Q: During primary succession at Glacier Bay, overall plant species diversity
- increased steadily throughout succession.
- increased slowly at first, then more rapidly after a few hundred years.
- peaked at early successional stages.
- decreased steadily throughout succession.
- increased rapidly, then leveled off.
A: increased rapidly, then leveled off.

Q: An area that is in the early stages of secondary succession will typically contain
- perennial shrubs
- annual grasses
- rock lichens
- evergreen trees
- deciduous trees
A: annual grasses

Q: As communities change during the process of succession, species diversity typically
- increases.
- stays the same.
- decreases.
A: increases.

Q: Which of the following statements about succession is correct?
- Primary succession occurs where soil remains after a major disturbance.
- Secondary succession occurs where no soil exists.
- Succession may involve facilitation, a process in which local species inhibit the growth of newcomers.
- Secondary succession can occur where a disturbance has left soil intact.
- Through successional dynamics, most communities will eventually become less stable through time.
A: Secondary succession can occur where a disturbance has left soil intact.

Q: Compare the two main types of succession. What is the distinction between them?

Q: A set of sites differing in their successional age is called a
- secondary succession
- climax community
- chromosome
- chronosequence
- chronograph
A: chronosequence

Q: If a tornado moved through an environment, which would most likely follow afterwards?
- Primary succession
- Secondary succession
- Climax community
- Transistion phase
- Inhibition model
A: Secondary succession

Q: In the transition phase of forest succession,
- biomass declines from a previous peak.
- biomass increases rapidly as the community changes.
- biomass stabilizes, but species composition changes rapidly.
- nutrient export increases dramatically and soils become depleted.
- one climax community suceeds another.
A: biomass declines from a previous peak.