BIO 202 FINAL PAPER 2026 FULL
QUESTIONS AND CORRECT ANSWERS
◉ Identify the correct statement about conservation biology.
a) The natural genetic diversity of species varies from species to
species.
b) Edge effects influence all species negatively.
c) When a species rebounds from near extinction to its original
population numbers, genetic diversity also rebounds.
Answer: a) the natural genetic diversity of species varies from
species to species
◉ Suppose your friend says to you, "It doesn't matter so much
anymore if species go extinct, as long as we figure out the genome of
each species before it goes extinct." Which of the following
statements correctly explain why species conservation still matters?
Select all that apply.
A) Loss of species may lead to loss of vital ecosystem services.
B) Many species that are threatened could potentially provide crops,
fibers, and medicines for human use.
C) Loss of one species may lead to loss of other species.
Answer: All apply
, ◉ Biological magnification means that _____.
a) large species play a more important role in communities than
small species
b) the concentration of toxins increases at higher trophic levels in a
food chain
c) fat-soluble toxins magnify the effects of other toxic materials
Answer: b) the concentration of toxins increases at higher trophic
levels in a food chain
◉ What are the effects of fertilizer input into lakes?
Select all that apply.
a) Fertilizers lead to algal blooms that eventually deplete lake
oxygen.
b) Fertilizers are toxic to freshwater algae.
c) Fertilizers discolor lake water, preventing algal photosynthesis.
Answer: a) fertilizers lead to algal blooms that eventually deplete
lake oxygen
◉ The single greatest current threat to biodiversity is _____.
a) reduced genetic variability
b) overexploitation
c) global warming
d) habitat destruction
QUESTIONS AND CORRECT ANSWERS
◉ Identify the correct statement about conservation biology.
a) The natural genetic diversity of species varies from species to
species.
b) Edge effects influence all species negatively.
c) When a species rebounds from near extinction to its original
population numbers, genetic diversity also rebounds.
Answer: a) the natural genetic diversity of species varies from
species to species
◉ Suppose your friend says to you, "It doesn't matter so much
anymore if species go extinct, as long as we figure out the genome of
each species before it goes extinct." Which of the following
statements correctly explain why species conservation still matters?
Select all that apply.
A) Loss of species may lead to loss of vital ecosystem services.
B) Many species that are threatened could potentially provide crops,
fibers, and medicines for human use.
C) Loss of one species may lead to loss of other species.
Answer: All apply
, ◉ Biological magnification means that _____.
a) large species play a more important role in communities than
small species
b) the concentration of toxins increases at higher trophic levels in a
food chain
c) fat-soluble toxins magnify the effects of other toxic materials
Answer: b) the concentration of toxins increases at higher trophic
levels in a food chain
◉ What are the effects of fertilizer input into lakes?
Select all that apply.
a) Fertilizers lead to algal blooms that eventually deplete lake
oxygen.
b) Fertilizers are toxic to freshwater algae.
c) Fertilizers discolor lake water, preventing algal photosynthesis.
Answer: a) fertilizers lead to algal blooms that eventually deplete
lake oxygen
◉ The single greatest current threat to biodiversity is _____.
a) reduced genetic variability
b) overexploitation
c) global warming
d) habitat destruction
