Dispersal
Science
1 plays
10 questions
Question 1
Multiple Choice
1 point
When does ecological dispersal occur?
A.When the costs outweigh the benefits of not disperse
B.When the benefits outweigh the costs of not disperse
C.When the benefits and costs are equal
D.When there is only benefits and no costs
Question 2
Multiple Response
1 point
Reason/ reasons an individual may disperse in an ecosystem
A.Escape unfavorable condition
B.Reduce competition for resources
C.Increase the range of the species
D.Remove from permanent habitats
Question 3
Multiple Choice
1 point
Which statement is not TRUE on secular dispersal?
A.Undergo evolutionary changes
B.Occurs in a short time
C.Dispersing species expands over geologic times
D.Establish varieties, subspecies or new species
Question 4
Multiple Choice
1 point
What is the negative impact from Gypsy moth introduction?
A.Develop hybrid caterpillar
B.Caterpillar with disease resistance
C.Reduction of timber trees
D.Increased number of timber trees
Question 5
Multiple Choice
1 point
The place that provides for an animal's needs is called....
A.an ecosystem
B.a habitat
C.a population
D.a niche
Question 6
Multiple Response
1 point
Which is NOT the characteristic of a fugitive species?
A.Usually found in disturbed habitat
B.Produce large number of seeds
C.Reproduce and leave even when there is no competition
D.Colonize temporary habitats
Question 7
Multiple Response
1 point
Which statement/ s are TRUE regarding presaturation dispersal as according to Lidicker's (1975) Hypothesis?
A.Happen when population reach/ exceed its carrying capacity
B.Happen before the population reach its peak/ maximum or before resources get depleted
C.Low chance of survival
D.Dispersers are in good condition
Question 8
True/False
1 point
Fire ant was spread geographically by diffusion method
A.True
B.False
Question 9
True/False
1 point
Dispersal is advantageous when habitats are not patchy and stable
A.True
B.False
Question 10
True/False
1 point
Competition among animals is usually for food, mate and habitat
A.True
B.False