Question14 The process of movement of an individual from the population they were born to another is called _______. When an organism floats away from its location, this is a _______ form of movement. When responding to an internal environmental cue this is best described as _______ movement.Select one alternative: dispersal, passive, innate dispersal, passive, active dispersion, active, passive dispersion, innate, active ResetMaximum marks: 1 Flag question undefined单项选择题
A
dispersal, passive, innate
B
dispersal, passive, active
C
dispersion, active, passive
D
dispersion, innate, active

Question

Question14 The process of movement of an individual from the population they were born to another is called ___. When an organism floats away from its location, this is a _ form of movement. When responding to an internal environmental cue this is best described as _____ movement.Select one alternative: dispersal, passive, innate dispersal, passive, active dispersion, active, passive dispersion, innate, active ResetMaximum marks: 1 Flag question undefined单项选择题

A

dispersal, passive, innate

B

dispersal, passive, active

C

dispersion, active, passive

D

dispersion, innate, active

BlackTom AI · Accepted Answer

Dispersal is the correct term for movement of an individual from the population where it was born to another population.

1. Relevant knowledge points and concepts
- Dispersal vs. dispersion: Dispersal is the movement of individuals away from their birthplace or between populations. Dispersion describes the spatial distribution pattern of individuals within a population (e.g., clumped, uniform, random).  
- Passive vs. active movement: Passive movement occurs when an organism is transported by external forces (wind, water, other organisms) without its own locomotion; active movement requires the organism’s own energy and locomotor effort.  
- Innate movement: Innate (endogenous) movement is triggered by internal physiological cues or genetically programmed behaviors (e.g., migratory restlessness driven by hormones), as opposed to movements triggered by immediate external stimuli.

2. Step-by-step reasoning
- First blank: The phrase “movement of an individual from the population they were born to another” describes natal movement between populations — that is the definition of dispersal (not dispersion).  
- Second blank: “When an organism floats away from its location” indicates transport by an external medium (floatation), so this is passive movement (the organism is not propelling itself).  
- Third blank: “Responding to an internal environmental cue” implies the movement originates from internal physiological or genetic triggers, which is described as innate behavior (not simply “active,” which only indicates self-propelled movement).

3. Calculations
- No numerical calculations are required for this conceptual question.

4. Why the correct answer is correct
- Dispersal names the between-population movement; passive correctly classifies floating transport; innate correctly labels movement driven by internal cues.

5. Why other options are incorrect
- Options using “dispersion” misuse the term for between-population movement.  
- Options that label floating as “active” contradict the definition of active movement.  
- Options that substitute “active” for the internal-cue-driven movement fail to capture that the trigger is endogenous (innate) rather than merely self-propelled.

6. Conclusion
The correct choice is “dispersal, passive, innate,” which matches the provided answer.

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