ALS EXAM 1 QUESTIONS & VERIFIED ANSWERS
Pathways are routes by which invasive species are introduced into new environments.
The three broad categories of pathway introductions are (1) natural spread and host
range extension, (2) accidental introductions, and (3) deliberate introductions. Under
which of these broad categories does emergency food, disaster relief and development
aid fall?
a. Natural spread and host range extension
b. accidental introductions
c. traditional movement of goods and people
d. deliberate introductions - Answers - accidental introductions
...................... is the number of discrete release events or frequency of introduction
events - Answers - Propagule number
The four stages of invasion are ___, ____, ____, _____ - Answers - arrival/introduction,
establishment, spread, and impact
Of all the components of biosecurity ______ is the most critical and cost-effective -
Answers - Prevention
T/F: All introduced species establish and have detrimental effects - Answers - False
A set of formal scientific methods for establishing the probabilities and magnitudes of
undesired effects resulting from the introduction of non-native biological organisms is
called ................. - Answers - risk assessment
One characteristic of a poorly invaded habitat is _______
a. areas with extreme climate
b. high diversity habitat with available resources
c. low diversity habitat with available resources
d. disturbed habitats - Answers - areas with extreme climate
In general pests can either be regulated or non-regulated, and if regulated, the
International Plant Protection Convention defines two potential categories the pest may
fall into. These are .............. pests and ............... pests - Answers - quarantine and
regulated non-quarantine
T/F: Regulated non-quarantine pests are pests that are absent from an area, or present
but under official control, whereas quarantine pests are pests that are already present in
an area - Answers - False
Pathways are routes by which invasive species are introduced into new environments.
The three broad categories of pathway introductions are (1) natural spread and host
range extension, (2) accidental introductions, and (3) deliberate introductions. Under
which of these broad categories does emergency food, disaster relief and development
aid fall?
a. Natural spread and host range extension
b. accidental introductions
c. traditional movement of goods and people
d. deliberate introductions - Answers - accidental introductions
...................... is the number of discrete release events or frequency of introduction
events - Answers - Propagule number
The four stages of invasion are ___, ____, ____, _____ - Answers - arrival/introduction,
establishment, spread, and impact
Of all the components of biosecurity ______ is the most critical and cost-effective -
Answers - Prevention
T/F: All introduced species establish and have detrimental effects - Answers - False
A set of formal scientific methods for establishing the probabilities and magnitudes of
undesired effects resulting from the introduction of non-native biological organisms is
called ................. - Answers - risk assessment
One characteristic of a poorly invaded habitat is _______
a. areas with extreme climate
b. high diversity habitat with available resources
c. low diversity habitat with available resources
d. disturbed habitats - Answers - areas with extreme climate
In general pests can either be regulated or non-regulated, and if regulated, the
International Plant Protection Convention defines two potential categories the pest may
fall into. These are .............. pests and ............... pests - Answers - quarantine and
regulated non-quarantine
T/F: Regulated non-quarantine pests are pests that are absent from an area, or present
but under official control, whereas quarantine pests are pests that are already present in
an area - Answers - False
