01
Choose one
1 point
A population of insects contains a few individuals with heritable alleles that provide pesticide resistance. After the pesticide is applied, which outcome best illustrates natural selection?
Free Practice Quiz Question List
04. Biodiversity, Evolution, and Conservation Online Quiz Questions
Use this free practice quiz with 20 questions to review 04. Biodiversity, Evolution, and Conservation, test your knowledge, and prepare for your next test or exam.
20 questions
02
True or false
1 point
True or false: Every non-native species is invasive.
- A
True
- B
False
03
Written response
1 point
What term describes a species disappearing from a particular area while continuing to survive elsewhere?
04
Fill in the blank
1 point
Complete each statement with the most precise term. Dividing a continuous habitat into smaller, isolated patches is , whereas removing habitat from an area is .
05
Choose one
1 point
Which scenario is the clearest example of allopatric speciation?
- A
A plant population becomes polyploid and immediately becomes reproductively incompatible with its parent population.
- B
Two populations occupy the same area but develop different courtship behaviors.
- C
A canyon separates a population, and the isolated groups diverge until they can no longer produce fertile offspring together.
- D
Two related species breed during different seasons in the same region.
06
True or false
1 point
True or false: Wildlife corridors always benefit conservation and cannot create ecological risks.
- A
True
- B
False
07
Written response
1 point
What term describes the altered light, wind, temperature, predation, and disturbance conditions found at the boundary between two habitats?
08
Choose one
1 point
A bird population experiences a shift in food availability so that large seeds dominate, and birds with larger beaks leave more offspring. Which type of selection is most directly illustrated?
- A
Directional selection
- B
Stabilizing selection
- C
Disruptive selection
- D
Sexual selection
09
Fill in the blank
1 point
Complete the management sequence: The most effective first step for invasive species is ; if an introduction still occurs, the next priority is before the population spreads widely.
10
Choose all
1 point
Which three outcomes can result when a continuous habitat is divided into smaller, more isolated patches? Select all correct answers.
- A
Populations become smaller and more isolated.
- B
All edge-related environmental changes disappear.
- C
Movement between populations and gene flow may decline.
- D
Every population gains more access to food and nesting sites.
- E
Exposure to predators, invasive species, and human disturbance may increase.
11
Choose all
1 point
Which three factors can directly increase extinction risk in a small, isolated population? Select all correct answers.
- A
Random variation in births, deaths, weather, or food supply can have large effects.
- B
Genetic drift becomes impossible because every allele is preserved.
- C
Inbreeding can increase the expression of harmful recessive alleles.
- D
Loss of genetic diversity can reduce the ability to respond to new pressures.
- E
Small populations are automatically protected from local extinction.
12
Choose one
1 point
Community A contains four species, with one species making up 95% of individuals. Community B also contains four species, with individuals distributed equally among them. Which statement is correct?
- A
Community A has greater species richness because its species are equally abundant.
- B
Community B has greater species evenness because its four species are equally abundant.
- C
Community A has both greater richness and greater evenness because one species dominates.
- D
The communities cannot be compared without genetic data.
13
Open ended
1 point
A forest species has declined after its habitat was divided into small agricultural patches. The remaining populations are isolated, show reduced genetic diversity, and face invasive species and periodic drought. Propose an integrated conservation plan and explain how at least four actions would improve the species' long-term persistence.
14
True or false
1 point
True or false: Individual organisms evolve during their lifetimes when environmental conditions change.
- A
True
- B
False
15
Choose one
1 point
Which example best fits the definition of an invasive species?
- A
A non-native plant that remains rare and has no measurable harmful effects
- B
A non-native insect that spreads rapidly and displaces native insects
- C
A native predator that reduces the abundance of a prey species
- D
A species that naturally expands its range after a change in climate
16
Written response
1 point
What evolutionary mechanism occurs when migrating organisms reproduce in a population and introduce alleles from another population?
17
Choose one
1 point
Two forest communities each contain four species. In Community A, the four species are equally abundant; in Community B, one species makes up 95% of all individuals. Which statement is correct?
- A
The community with one dominant species has greater species richness.
- B
Both communities have the same species richness, but the equal-abundance community has greater evenness.
- C
Both communities have the same species evenness because they contain the same number of species.
- D
The community with one dominant species has greater species diversity because dominance increases evenness.
18
Choose one
1 point
A continuous forest is divided by roads and agricultural fields into several smaller patches. Which consequence is most directly associated with this habitat fragmentation?
- A
It always increases the total amount of habitat available
- B
It eliminates all edge effects by creating smaller habitat boundaries
- C
It guarantees that isolated populations will have greater genetic diversity
- D
It can reduce gene flow by isolating populations in separate patches
19
Written response
1 point
What term describes a species disappearing from one particular area while surviving elsewhere?
20
Choose one
1 point
Which scenario best illustrates allopatric speciation?
- A
A canyon separates one population, and the isolated groups gradually become unable to produce fertile offspring together
- B
A plant population undergoes chromosome duplication while remaining in the same location
- C
Two populations begin breeding in different seasons without any geographic separation
- D
Different courtship signals evolve within one continuously interbreeding population