WSU BIO 106 FINAL STUDY GUIDE SOLVED
QUESTIONS AND ANSWERS
◉ Communities are typically dominated at early stages by.
Answer: r-selected species
◉ As communities develop, they are dominated by.
Answer: k-selected species
◉ Thinking back to plant diversity, which of the following is true
about mosses.
Answer: they lack roots and vascular tissue
◉ How does soil formation begin?.
Answer: mosses and lichen break down rock releasing nutrients.
capture and create nutrient-rich matter
◉ What must form before community can become established?.
Answer: soil
◉ Ecological Succession Theory early stages.
,Answer: dominated by opportunistic species, good dispersal
capabilities, rapid population growth, not strong competitors,
facilitate ability of next wave to colonize
◉ What is the foundation of a community?.
Answer: producers
◉ When do consumers arrive?.
Answer: as resources become available
◉ What happens to the community as equilibrial species take on
larger role?.
Answer: they evolve
◉ Climax community.
Answer: mature community that is stable over time. complex
interactions tie community into dynamic unit. disturbances can push
community back to earlier stages
◉ What are interactions?.
Answer: selective pressures
◉ Fundamental niche.
, Answer: all resources used and interactions under ideal conditions.
the role in the community
◉ Realized niche.
Answer: restricted due to competition
◉ What does interdependency lead to?.
Answer: co-evolved adaptations
◉ What are the drivers of natural selection?.
Answer: genetically diverse population for a trait, selective pressure
favors some individuals over others, differential reproduction based
on traits
◉ Selective pressure predators.
Answer: selects against prey that are easiest to catch and eat
◉ Selective pressure prey.
Answer: individuals who are a little bit harder to catch survive and
leave more offspring
◉ Selective pressure predators 2.
QUESTIONS AND ANSWERS
◉ Communities are typically dominated at early stages by.
Answer: r-selected species
◉ As communities develop, they are dominated by.
Answer: k-selected species
◉ Thinking back to plant diversity, which of the following is true
about mosses.
Answer: they lack roots and vascular tissue
◉ How does soil formation begin?.
Answer: mosses and lichen break down rock releasing nutrients.
capture and create nutrient-rich matter
◉ What must form before community can become established?.
Answer: soil
◉ Ecological Succession Theory early stages.
,Answer: dominated by opportunistic species, good dispersal
capabilities, rapid population growth, not strong competitors,
facilitate ability of next wave to colonize
◉ What is the foundation of a community?.
Answer: producers
◉ When do consumers arrive?.
Answer: as resources become available
◉ What happens to the community as equilibrial species take on
larger role?.
Answer: they evolve
◉ Climax community.
Answer: mature community that is stable over time. complex
interactions tie community into dynamic unit. disturbances can push
community back to earlier stages
◉ What are interactions?.
Answer: selective pressures
◉ Fundamental niche.
, Answer: all resources used and interactions under ideal conditions.
the role in the community
◉ Realized niche.
Answer: restricted due to competition
◉ What does interdependency lead to?.
Answer: co-evolved adaptations
◉ What are the drivers of natural selection?.
Answer: genetically diverse population for a trait, selective pressure
favors some individuals over others, differential reproduction based
on traits
◉ Selective pressure predators.
Answer: selects against prey that are easiest to catch and eat
◉ Selective pressure prey.
Answer: individuals who are a little bit harder to catch survive and
leave more offspring
◉ Selective pressure predators 2.
